Special

MmuINT0139128 @ mm9

Intron Retention

Gene
Description
strawberry notch homolog 2 (Drosophila) [Source:MGI Symbol;Acc:MGI:2448490]
Coordinates
chr10:79535102-79545471:-
Coord C1 exon
chr10:79545360-79545471
Coord A exon
chr10:79535264-79545359
Coord C2 exon
chr10:79535102-79535263
Length
10096 bp
Sequences
Splice sites
5' ss Seq
CAGGTAATG
5' ss Score
9.43
3' ss Seq
CACTGCTGCCTGTCTCCTAGGAC
3' ss Score
8.3
Exon sequences
Seq C1 exon
ACAGTTCGTGGGTTCCACCCCATTCCTTGGTGGCCAGTCTTGCCCTGAAACCAGCTACCCCACCACAGCCACCGTCCCCAGCTTCTTCTCCAAGAGCAGCGACTTTCCTCAG
Seq A exon
GTAATGGCCACCCTCGTGCCCACTGCATGGGGCCCAGAGCTGTCACTGTGGCCACTGGTCTTCAGTGGGGCTGATTGAGACAGGGCTTTGAGGCTGATTTGGACAGGGAGGATCAAGCCAGCCAGACTGGCTGTGGCATCCTGGGATTTGGGTCTGTCACTGGCCTTTGAGACTTTGCCTCGGAGTGGTGTCCGGAGCTGTATGAGGAAGGCTGAGGACTACCAGGGTCTGTGCCCACTGCTAGGCCATCCTCACTGGACGCCATAGGGTCTCATGCCTGCCTTACACTGGCACTATGGTGGGATTTCCCCAAAGCCTCCACACAAGTGTCTGTGCTCTGTGCAGCGTCTGTGGCCAAAAAGCTCACCCACAGATCACAGGAAAGAGTTGAATCTATTCCCCATGGGACACCAGGGAGGCTACCCCACCAGTCCCTCTCATACCACCCAGGGACACGTAGCAGTGAACTGTATAGAGGTCTCTGCTCAGCAACCGGGCAGTGGCAGACACATATCTCTAGAAGTGTAAAGAGGCTCCTCAGACCACCACAAGGAAGCCACTTCTGCCAGCCCTCATCTCTCTGCCTTGTCTGCCTGAGTGTCTCTGTCTGCCTGTGTATCTGTCTCTGTGTGTTAGCTTTCTGAAGGAATAGAACTGATGAATTGATATATGTACATGTATAATGAACATGTAGTATGTGTCACACACACATGCAGATAGATACAGACGTGAGTGGCCCCTCAGTAGAGTGGCTTATAGTCTGTGCTCTGGGTAGTTCTCAGCAGTTGTCTTTAGTTGCTCAGTCCTTGAAGCTGGATATCCCAGCAGTTCAGATCCAGTGCTGGAGTCCTGTAGGATTCCTAGGGGATGCTGGTCTTCGGTCTGCACTGGAATCCTGAAGAACAGGGTTCTGACACCAGTGAGGGAGTGCCTCAGCAGCAGGGTGGATGAACCTGCCAGCGAGAGTGAGGGCAAGCAGGCAAAAAGCAAAAGCATTCTCCTTCCATACCCTCTTATGTGGGCTACCACCAGAAGGTGTGGCCAAAGTTTAGGGGGGTCCAGGCACGAGCCTCCCCCACAGGTGTGCCCAGTGGCTTGGGTGAGTTGATTCCAGCTGTAAAGCTGGTGACCAAGATCACCCAATCAGGCTCTGTCTCTGTGTGTGTCTCCCTGTCTCTGTCTCTGCCCTCTGCCTTTGTGTCTATGTGTCTCCATCTCTCTTCTGATGCCAGAGGCCCACATCTGCCTCCCTGTGGCCAAAACTCCCAAAGGTGAGCTCCCCCGCCCCTCTCCTGCCAGCTGTGCTCACGTGATCTGCTTGTCTGAACCCCATTTGTCACACACATCTGGCAACGTGGTGGCTGCCTGTTATCTCTCACTGGCAGATGGGCATCACCATCCATTGGGTGAGCATTTATTGAACACTTGGTGTTTGTGTGTCCTGTACACACTGCCCCCTGAATGCCTGTGGAGGGGCCTACCCTCATGCCTGTCACCCTGTCCACAGAAGGTTGGACCAGGGGATTCTATCCTAGCCTCTGGCTATGGGCCTGAGCTTGTCACCTGCCTCTACCTCCCTCATCTCCCCAGGCCATGGATGGCCTCGGATTCCACAGAACAAGAAGGAGCCAGACCTGAGCCAAGCCTCACCACAGGTCAGAAAGGACATGAAGAGTGGCTTAAGTGAGGTCCCTGAGCTGGGGACATCTCCCTGAGGTCCTCAGAGGCCCTGCTCCGTGCCCTCCACAGGGGAAGGGCTGAGCGTCCTGGAGATGTGGGTGTGGCCCAGCCCCACCCGAGTGGGCGTGGATCCGCCTTGCATGTGGCTTCAGGACATAGCTTTCCACAGTTTGTTCCAGTGGCAAGAAAGCGGATACCCTCATGCTACCTCTGTGCTCCGTGTGGTCATGTTTCCTACCGTGGTGTGAACCAGGAGTCAACAGAAAACCCACCTCTGCTTGGACCCAGAGCTAGGAACTAACCATGAGCCCCGAGTTTCCTGGCAGAAGAAGCAAAAAGAGAAAGAGATGAGTCACATGACTGACCCGTACACGAGGAAAGTCTGTGGACGGCTTCCTGTGTTCTCACTCTCCACTCAGGAAGCCAGGCAGGAGGACGGAGGTTTTAGGTGTTCCTGGGCTATATCCTCAAAGTCTGTCTCGAAGCAACGAGAAAACTAACAGAAAGAGAAATAGAAGAAACCAAATATTGTCTGCCATTCAGTCTGTCCCTTCCCTGTGGGTAGGAGCCTCCTGTGCACTTGCATCTTGAAAGTCGCCTCTGATGTCTGCCATCTTCTGCTCTTCGTCCTTCTGCTGTGAGCTGTGGGAACCCTTCCCACAGCATACATGTCCCACAGTGCTGCATAACTTTGACCCTTGGGGCCCCAGTAGCTGCTGACTGGACCCAGCACAGCACACACTGGTCATTTCAGGATCCCACAGAGTGTCTTGAGTGCCTGACAGTCCCTGGAGCCCTGCCTTCCTTTGCAGCCGGCCCCAGCCCTCAGCCTCCTACTTCTACAAGGGAAGGGCCCGTGCACTCCTGCTCAGCCCTCCATCTCCAGGTGGCATGGAGCCCTCCCCATAGGCTCTGATAGCCCTGCTCGGTGACCGGAACAGCTCCACAGTCCCCTGTGGGAATACCCACCCTGGGCGTGCAGGTGCGTGGCTACCCGACACCTGCTCTTGTCTCCATTCTTGAGTTTTTTTAGTTGAGACATCATGTGACTCCCAAGCTACCATGTCACCCATCCCATGAACCATCTCTCCCTCCTTAGTCCCCAGCCCCTGCTCTGGACATTTCCTGTTATGGAGTTCCACACAGTGTGACCTTTGTGTCTGGGTCTCTCACAGTGTCTTGAAGCCCCTCTATACTATGGCCTGTGTCTCTACCTCTCATGGCTGAGTGACACTCTGCCTGTGTGCTGTCTGCTCATCTTCTGCAGAGCTTGTTTATCCATTTGACCATCGAGGATGGCAGAGTTTCCATGGGGACTTGTTCCTGTGGTTCTCGAGTGCATACCCAGGAGTGGAAGTGTGGGTAGAGGTGACAACTGTAAGCTGGTAGTGAAGGTTTTTGTGTACTGGGTGTGGGGGCCTTGGTTCTTACCTCAGGAGGGCAGGTACAGCACACTTGGGGCAAAGCCTGTTTCATGAGAGGGGTGCCAGAGGCTGTGGGAAGTACCTGCTACCTGGAGCCATCTCTTCTGTGCTCTCCCCAGGCCTCTCTCCGGCTGTCCCCTCCTGGAGTGCCCTGGGACTCCTCTGTTCCCAGGACTCACCCAAGCCCTGCCGCACCTTTCTTGAGGCTCCCTGTATGGATGCAAAGCCATGCAGACCCCACCTTCTTGGCCATGGTCCTGTTTCTCATTACCCCCAGCCCCTGTACAGGGAAGGCAGCCTCCAGGCCCTTGGTGTGCACAGGTAGGCCCGCATCCCAGGCCCCCCACTTCCCTCCAAGGCTGTATGTCCCGTAACATGCTCACTTGGCCAGCTGCTGGGAAACTAGATGAGCTCACAAGCTCAGGAAGGAGCGATGCCGCCTCCCACCTCCCGCCTCCCTCCCAGTGGCTGCATTGACTACTCCGCAAATGCTAGTCAGGATCAGAGGTCTGGCCACTGCCTGCCCAACAGTTTACCGGCATTGGGAAAAAGAGAGCCAGAGAGGGGCGCTAGCTTACAGGAAGCCACATTGGCTGCTGCTTCGTGTAAGAGGTAGACAGTGGGGACCCTGTACATCAAATTCCATACACACTGTGGTCCAGGCTATGCTCTTTTGGAGAGGCAGGAGTGGGCAGGGTGGCGGGGTCTGGAGCCAAAACCATTTAAGAACCAGTCTCTCCCAAATGGTGAGCCTGGTGGCCCAGGCAATCTGCACAGCACCTCCCTGGCCACTCCCATCATCCCAGGCTCCCATGTACCCCTGAAACTGTCTCCAGCCTCCTGTATCACCCCTTCTCCTTGTGTCTGTCCCTCAGTCTCGTAGTGACACTCCTGTAGTTGGGTAAAAATTCACCCTGACCCTGTGGGACCTCACAGTAGCTTAGTATTTCTGCAATGACTGTGTTCTCAGGAGCTGGGGCCAGACATAGGCTGTCCTAACAGGACATTTTATTGATTGATTGTTACATTTTTTATAGTGTGCTCAGTGCAGGTTAGCCCTGAACTCATTATGCAGCTGAGAAAGACCTTGAACTCCTGATCTTCCCTCCTCTGCTTCCATTCATGGTTTGTGTGGTATCTGGGATAAAAACCCAGGCTCTCTGCATGCTGGGTACCAACTCTGTTAGCTCTCTCTGTTTTGTTTTTGAGACAGGGTCTCTCTACATATACCTGACTGTCCTAGAAGTCATTATTTAGACCAGGCTGGCCTTAAACTCACACTCACCTGCCTCCTAAGTGCTGAGACTAAAGACTGCCAGGCCTGACTCATTTCATTTTTCTTTTCTTTTCTTTTCTTTTCTTTTCTTTTCTTTTCTTTTGGGGGGTGGGGTGTTTCGAGACAGGGTTTCTCTGTGTATCCCTGGCTGTCCTGGAACTCACTTTGTAGCCCAGGCTGGCCTCAAACTTAGAAATCTGCCTGCCTCTGCCTCCCAAGTGCTGGGATTAAAGGCGTGCACCACCACGCCCGACTTCATTTCATTTTTCTTAAGATGAAAGTCTTATGTAGCCCAGGCTGGCCTTGACCTGGTGACAAGGCTCCTGCCTCAGCCTCCTGAGAGTTGGGATCACATGAGCCACTTTGTCACTTTAGCAGTTGGGATGACCTGCTGGCTGCTTACACCTATCCAGGCCAGCCCTGCCTCTCTGCACAGGAGCCTTCTATGTTAGGCAAGCAGCCCTCCCTGCCCTGCTCTGTCCCCTCGCTGTGGTACAGGGAACCCTCTACTATTCCCAGCCTGGCCACACAGCCCGATACCGAGTGGTCAGGAAAATGGGGAGCCAAGGCAGAAGGAGATGCAATAGAGAATTAAACCCAAGCTCTGATGGTTCAAGCTGTCCCTCTAAGGGACATCCACTCCCATTGCCTCTGCCAGATCCAAAGACCAGCCTGGGAGTCAAGGTTGCCCACAACCCTGTCCCTGCCCTCCGTGCCCATGATTCTCACCCTGGCCATCAGCCACATCAGCAAACGTCCCACCATCAGGCCTTGTGCTCTAGCTTGGCCCTATCCATCAGGGTCAGCACAGGCCACACAAATGACTCTTGTGCTAAAGTCCTCATGTCCCTCGTTCCCATGTCCCCAGCTCTCCCTTATCCCAGGCTCACTGGCCCCAGCCCCTCTGAGCCCTGGGCTTGTGTTCTCTTGGCCCCTAGATCTCCCTTGCCTGACAGCTCACATGCCTGGCCTCCAGGGGCTGAGAGGCAGAGTGACCCCCTCCTGCTACCCCTGAATGCTATCTCCTCATACCTACCCGACTCTGACCCCTGGGAGCACCCTCAGGCCTTTGCACCCTCACAGTTTGGATGTTTTGAGACTTCAGTTTTTCATCTTGGTTCCATCAATCCCTGTACACCCCTAACCCCCAAGACAGGGTCTCTCTGTGTAGCCCTGGCTGTCCTGAAACTCACTCTGCAGACCAGGCTGCCTCTGCCTCCCAAGTCCTGAGATTAAAGGCGTGTGCCACCAGCACAGGGCCTTCAGTTCTTACAGTCCAGACAGCTGTCCCTTCAAAATACTCAGCACCCACAGGAGAGGCAGAAGCTGGAGATTAGTCTTGGATGCATAGACTGTAGACACAGGCAGCCCTTACCGCTATCTAGAACATTCTGTCTCCTCAAAGGAAGGCATAGCCCCATGACAGGGTATTCTATCTCATTTGCAGCCCTTGGAGCCCCAGGCCCTCTGTGCTCTTGTGTTTGGCTATCTCTGAGCACTGTCCTTGAGGTCCCTCCATGCTGGAGTCTCTCGTTCATGGCTGTGTAATACTCCTGCCTGTGGACAATGCGTGCTGTGCTGTGTGCATTGGTGGACACTAGCTGTTCCTACGCTGGTGCAGTGACTCACTGCTGTGGGTGCTCCTAGTTTTCCTATGAGTATTTTGGAAAGGTATTTGTAGAGTCAGATGGAAGCCAGCACTTTGCTGTCTGAGAGGCTCACTGCTCCAGAGGCCACGGGCTTCAGCCCCACACACCCTTGCCACAGTTGCAACTGCTGGCTTTTGAGTCTAACTGTCCTTGGTGGTATCCTGCTCTGATTTCTGTTTTGAGTTTGAGAGAGGGTTTTGTAGTGTAGCCCAGGCTGTTCTCACGGTCCTCCTGCCTCAGCCTCTCACGGATGTGCCACAATGCCTGGCTCCACTGTGCTGACTGGAATTGAGGCTTTGCTCCATGCCTGTGCCTATGGCTAGGGGGCAGGATGTTGCCAGGGTGGGCAAGGGCAGCTCCAGGTGCTGCCTCTGGGCCAGTGTCCTGGGTGGCCACGCTGTGTGAGTCTAGTAGAACCCTGCAGCCCTGCTGTCCTGACAAGATGGCCAGGGATCTTCCTTGATGGATGGGCTCCTGCTGACTTGGGCTCCTCAGCCTTCTGCTCATGAGCACTGACATGTGGTGACCTTCTTCCTGGGATACCTCACCCCCAACAGGAGGCCAAGTCCTCAGAGACAGCCAGGAATGTAGCCCTGTGGGGGGCCAAACACCTGTGCTGCATCCCTGCCTGCCTACAGTGGAAGTGTCTTCTCCCATCTTTGGTGGCCCTAGGGTCTCCCCAGCATCTCAGCTCATTTGAGAATATCAGAAATGATCGCTTGGGACCCTGATATGAGGAAACTGGAGGCTGTGTTTTGATGAAGGGCTAGGGAGCCCCAGCTCAGCTTAAGGGAGGTATAGAAGGGTACCCAGGCCTCAGTTTCCTCTGGCCCAGCTTCTATAACCCCTGATCCCTGTCATCCCTGGGGGTGGGGGTGGGGTGGAGTGGGAAGGGGGCTGGTACACAAAACAGAACCCGGTGCTTCAGGAGGCCCAGGGAAACTGAAGCTTCAGCTTCTTGTCCCAAGGGAAGTCCCAGAGAAGTGGGGTCAGGCCAGGCTCTGGGCCCAGCAGGGTGCGCCGTTGTTGACAGCCCTTCTGGGCTGATCCGCCCCCTACAGTAATTCTCTGCGCTCTGCCAGTAACTGCCCTGACTTACCAGGCAGGCATCATTTCCTGAAACCCAGCCCAGCCTTAGGGGAAGTCGGAGCCGGTGACTAACCCTCATGCAAATGGGGCCGGCTAGATCTCTTCTGCCTCTGTCCCTGACGGAGCCGCCGAGCCTGCGGCTGCCGTGGTCATGAGGCTGGTGCTCCCCAGCAGCTCTTCCAGGGGGACACGCGGCCACCACTCAGCGCCCCCGCACCCCGACCATGTCACAGCTGCGCTTCTGGCTGCAGTTCGCTGCGCTCAACAAGGTAACTGGCCAGGGATCAGCAGGGCCACCCAGAGCCACCTGTGGCGCCTCTGAGTTCCCACAGGTGGCGGAGCTGTGGCACGGGACGCCCCCAGCCCTGCCCACTCTCAACTTTTCTTGGCAAGTCATAGTGAACATGCCAGAAGTTTTTAAGCCAGAGACTTGAGGCTCAGCGTAGTGGCCAGCGTGAGGACAGCTGTGGGAGGGAGCCTCGGGTACAGGTGTCCAGAGCTGGTCCAGCTGCTCTCTGTATCAGGGGAGGGATGAGCTGGGGTGTCCTCGGTCCAGGGGGACAATTGTCAACACTTCTGCATGGGCTAAAGCAGGACTCAATCTCAGCAAGGTCTGATGGGATAGGAAGAGGCAGGAGCCCATCTTTTCTCTGGGTTGTCAGTCCAGAAGGGGTGGAGGGTGTCTGTGTTTCTGTGGGTCTCTTCTGGGTTTGCCTTCCTGGGCTGGGGAGATGTTTGCTGTGTGACCTGGGACAATCAAGGGCTAGTCCCTGCCAGTCCCTTCGCTGTGGCCTTTCCCACAGAGGTAGGTACCTTGCCAATGTGGGTCTGTGTATACTAGACCCACATTGTAGACAACGGAGTGGGGTCCTGAATTGTCCTGGGGCATTACCTATCAGGCCTAAGCAAGGCCAAACACAGGGTCAGACTGTGGCACTCCAGAAGCCCTGTGTCCAGAGGAAGTGGGTCAGGAAGTTTATCCCTACTGGCCTGGTTGGTAAAAGTTTTAGACTAGTATTGAAGGCTCCAAGTGAGGTGCTTGCCTGCCACCCCAGTACTAAAGGTGGAGGTAGGAGGATTGGGGGTTCAGGGCCAGCCAGAGCAATGTGAGACTGTCCCAGGGTCGTACCGTGCAATCCTCAGGGCTCTCACTTCCTGTCCCTATGTAATGCCCATCACACCGAGTGAGGGGCTTTCCACTGACACATGGTACCCTCAACCATAGTGGCCTGCTGCTTCCAGTGCCTCAGTTTCCCTTCAGTTCCTTTCTCTGTCTATGATCCTTTAGGACATCAGCCATCCTCTTTCTTCAGGCTGTCTCCCTGGGACAGCTGTCCCATCTTAGGCTGAGGCCACTGTGGGAGTCCCTGGGTTTGCCTCCACCCGCCACAGCTGTGGAGACCATCTCTGACTAGCTAGAGCCATTGTGGGAGTGGGGGTGCTGGGTCTAGAGAGCCCTGAGATACGCAGCTCCAGTGCTCCAGGCTTCTCACAACTCCTCTGCCTCCTCCCTTGTCCAGGCCTGGGTTCTCTCGGGATTTTCTCACCATATTGGAGACCAAGGATCGTTCAGGATCCAGACTGGGTGCTGTGCTGGAGACAGGGCACAGGCTGTGACTGTCCAAGTCTGTTCCTAGTATATAATGGGGAAACGGGTCTCAAAAGCCTATCAGGTCCTTTCCTGTCCCCTGAATGCAGGCTGCCACCTCTGCAATGGGGTCATAGTGCCCTGTGAGGTGGGGGTTATAGAACCCAGCCCCATAGCAACCCACGGTCACTTGGGGTTCCCTAGGAAGTCACTAGATACCCAGACAATTGCCTCCCCTTTTCTGGGTAAGACCAAATGGCCCTGGACATGCTAACCCTCAGAGAAGATGGGCAGTTACCCAGGACCAAGACTCCTGAGTCTAAGAAAATAAGCCCTGGATGGCAGCCTCACACCAGGCTGGGTAGGCTGAGGGCCATACTCAGGGCTCTTCTGTCTCTTCTGACCTTGAAGCCTTGAAACCCCGTTGCCTAGTCACTTAGCCTTCTTGTCTCCTGGGGCAGAGCAGGTGACCTGTAACGGGTTACCTAGGTTCAGGACAGCCCCTTCACTCAGCATAGCCCTATCCTCCCTGGCCTCTAAGCACCCGTTCACCTTGGGTGTCTCTCAGGCAGAGCCTGGGGAGCCTGTTGTGCACCCTTGAGTGCTCACTGTCAAGGCTGGGGGGAGGGTGTGTAAATGGACTCTCCACAGCAGCTTACCCCTGGTCCTGATTGTAGTCCTGTGGGACTTCCTGGCCTCCTGCCCTGCCAAGGCGATGCTCCCCGGGCTTCCTGGGAGCCGTCAGCAGGACAGGTCGCTCTGGTTACCTGATCCTGAACTGAAGAGTACTATGCTGCGGCTGCTGTGGGACACAGGCACAGTGAGACAGACAGGGTGACTGCCCAGGCGCAGGCCTCAGGGGCGGCACCCTGGCCTCCAGAGGTCCCTTATGCGTCAGGGTTGGGACATGGAGAATCCCAGCCTGCAGGTGCTCTCAGGGACTCAGGGTGGAGAAAGGACTCCTGTCTGTCTGGCGTGGTGGCTCACTCAGGAGGCTGGGGGAGAACTGCAGTGACTCTGAGGGCAGCCTGGGCTACAAAGTAAACAGCGTGGTTATTCAGGTTCATACATATTCCATAGTTCATTTAAACTGTACATTCCTGTGGTTTTAATGTTGTCGTCGTGGCCATCACCCCACCCTTCCCCAGCTCTGGGAATGCTGAGCCACTTGCTATGCCTGCGTTCTCTAGTCTGGACATTTTCTGTTATGGAGTCCCCGCTGTGTGGCCGGCCTTGCGTGTCTTGCCCTCACTGAGCGCCATGTCCTCATGGTCACTCCATGCTGTGGTGTCCTGTTCCTGGCTGTGTGATACTTGGAACACATGGTTGCTCGCCTGGACCCTGAGTGCACACACAGCTGGCCACTGTGTCACTGCTGCCTGTCTCCTAG
Seq C2 exon
GACCCCTCATGCCTCGAGGACCTCTCCAATGCCTCTGTCTTCTCTTCATCTGTGGATTCCCTGTCAGACATCCCAGACACACCTGACTTCCTGCAGGCTGACAGCCTCAACGAGGTGCCTACCATCTGGGATGTCAGCACCACCTCAACTACCCATGACAAG
VastDB Features
Vast-tools module Information
Secondary ID
ENSMUSG00000035673-Sbno2:NM_183426:4
Average complexity
IR-C
Mappability confidence:
NA
Protein Impact

ORF disruption upon sequence inclusion

No structure available
Features
Disorder rate (Iupred):
  C1=0.276 A=NA C2=0.324
Domain overlap (PFAM):

C1:
NO
A:
NA
C2:
NO


Main Inclusion Isoform:
NA


Main Skipping Isoform:


Other Inclusion Isoforms:
NA


Other Skipping Isoforms:
NA
Associated events
Other assemblies
Conservation
Chicken
(galGal4)
ALTERNATIVE
Fruitfly
(dm6)
No conservation detected
Primers PCR
Suggestions for RT-PCR validation
F:
No suggested primer sequences
R:
No suggested primer sequences
Band lengths:
Functional annotations
There are 0 annotated functions for this event


GENOMIC CONTEXT[edit]

INCLUSION PATTERN[edit]


SPECIAL DATASETS

  • Pre-implantation embryo development
  • Muscular differentiation time course
  • Spermatogenesis cell types
  • Reprogramming of fibroblasts to iPSCs
  • Hematopoietic precursors and cell types