oestrous

In female rats, DEHP and its metabolite disrupt normal biological processes by prolonging oestrous cycles, suppressing or delaying ovulation and reducing estrogen and progesterone concentrations.

Phthalates 2008

Analysis showing that nulliparous female elephants do not direct their oestrous behaviour appropriately towards musth males, unlike parous females.

PLoS ONE Alerts: New Articles Lucy A. Bates et al. 2010

In fact, regardless of the dominant sex, the leverage of females increases when they are in oestrous because they have an inalienable commodity: their eggs ready to be fertilized

PLoS ONE Alerts: New Articles 2009

Activation oestrous behaviour plasma concentration unconjugated oestrogens swine subcutaneous implantation oestradiol-17 beta

xml's Blinklist.com 2008

Action urine normal gonadectomised males females length oestrous cycle rat

xml's Blinklist.com 2008

You can’t expect a race which can only live by killing animals, and has an oestrous cycle, and is incapable by instinct of maintaining what we’d recognize as a tme nation or government, and on and on-you can’t expect them to resemble Christians much.

The Earth Book of Stormgate Anderson, Poul, 1926-2001 1978

Marshall, who has found that in the ferret and other animals, ovulation may be dependent upon copulation, also considers that ovulation and menstruation, though connected and able to react on each other, may both be dependent upon a common cause; he finds that in bitches and rats heat can be produced by injection of extract from ovaries in the oestrous state (F.H.A. Marshall, _Philosophical

Studies in the Psychology of Sex, Volume 1 The Evolution of Modesty; The Phenomena of Sexual Periodicity; Auto-Erotism Havelock Ellis 1899