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. Author manuscript; available in PMC: 2013 Jul 15.
Published in final edited form as: Dev Biol. 2012 Apr 19;367(2):100–113. doi: 10.1016/j.ydbio.2012.03.026

Table 2.

Chi square analysis of progeny genotypes from the cross between Nes-Cre/+; Csf1rfl/+ and Csf1rfl/fl mice

Cross Progeny
Nes-Cre/+; Csf1rfl/+ X Csf1rfl/fl Nes-Cre/+
+/+
Number of progeny Number of litters *χ2 P
Csf1r fl/+ Csf1r fl/fl Csf1r fl/+ Csf1r fl/fl
Age O/E O/E O/E O/E
P20 18/22 12/22 24/22 20/22 74 12 5.26 0.02
E18.5 16/11 13/11 8/11 12/11 49 6 1.38 0.10
*

, Only Nes-Cre/+; Csf1r fl/+ and Nes-Cre/+; Csf1rfl/fl mice were considered for χ2 analysis (df = 1).

O, Observed; E, Expected.