Figure 7.

Genetic uniformity in averages? (spurious in the light of more stocks examined). Data on eosinophil counts (Eos) in five stocks of mice (from Halberg et al. J Hematology 6: 832–837, 1951; cf. Proc Soc Exp Biol & Med 75: 844–847, 1950). Mice kept in L_6-18D_18-6. Sampling during fixed clock hours: 06:00 – 10:00. When the time of day of sampling is fixed along with the lighting and feeding regimens, seemingly reproducible results are obtained on five stocks of mice, namely the A strain (with the mammary cancer agent [MCA]) and the A× (foster-nursed without the MCA), and various first-generation hybrids of the C₃H mice (Z with and Zb without the MCA) and the Dilute Brown subline 8 (D₈ with the MCA) mice, again a premature extrapolation.