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Abstract

EXPERIMENTS were done with Swiss × B alb C mice. Manipulation of light cycles indicated that there is a mode in the onset of oestrus (determined by presence of vaginal plug) 4-6 hrs. after the beginning of the dark period. Under normal lighting fertility was 84% at the 2nd post-partum oestrus and...

Author(s)
SNELL, G. D.; HUMMEL, K. P.; ABELMANN, W. H.
Citation
Anatomical Record, 1944, 90, pp 243-253