Spontaneous Anoestrus in Mice
نویسنده
چکیده
The length of oestrous cycles in a group of mature albino mice has been measured by the technique of daily vaginal smears. A high proportion of mice had prolonged cycles. It was shown that mice housed singly may experience abnormal cycles, the number being least when a wire loop is used for taking the smears. Housing mice in groups of four brought about an immediate cessation of normal cycling in the majority of mice. The introduction of a male was apparently sufficient stimulation for a rapid return to normal cycling.
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