Abstract
Summary
Peritoneal fluid was aspirated from 18-day-old fetuses as well as Day 1 newborn CF-1 mice and was placed on an albumin-coated slide, fixed in 95% alcohol and stained by histologic buffered Wright's stain. The % distribution of lymphocytes, polymorphonuclear leukocytes and mast cells increased in mouse fetuses possibly as the result of delivery and birth but no causal relationship was established. More fluid was obtained before birth than after in the newborn. Other mononuclear cells and eosinophils were less in peritoneal fluid of newborn mice.
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