cellular
• litter sizes from crosses of homozygous females are reduced by ~30% relative to those of wild-type females, indicating partial embryonic lethality
• some embryos of homozygous females die between E4.5 and E12.5
• however, surviving embryos exhibit healthy placentas at E15.5 and ~70% pups are born normally
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reproductive system
N |
• female homozygotes exhibit normal oocytes and corpora lutea at E15.5, indicating normal follicular development and ovulation
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embryo
N |
• placentas of female homozygotes lack platelet thrombi and do not exhibit anemia, as both fetal erythrocytes with nuclei and maternal erythrocytes are present in the labyrinth zone at E15.5
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