Appearance of F4/80-positive cells in fetal and neonatal kidney. Tissues were stained, positive cells were quantified, and results are expressed for +/csfm^op (•) andcsfm^op/csfm^op (▴) offspring after matings of (A) +/csfm^op female ×csfm^op/csfm^op male and (B)csfm^op/csfm^op female ×+/csfm^op male mice as in Fig 2. Where indicated,+/csfm^op differed fromcsfm^op/csfm^op at #P < .01 and *P < .001, respectively. Results of multiple comparisons over time, where indicated, showed ^aP = .09,^bP < .05, and ^cP < .001 versus day14; ^dP < .025, ^eP< .005, and ^fP < .001 versus day 15;^gP < .05, ^hP < .025, andⁱP < .001 versus day 18; ^jP< .05, and ^kP < .001 verus postnatal day 1; and^lP < .005 versus postnatal day 4, respectively.