Estrus or oestrus refers to the phase when the female is sexually receptive (" in heat " in American English, or " on heat " in British English). Under regulation by gonadotropic …

Estrus, the period in the sexual cycle of female mammals, except the higher primates, during which they are in heat—i.e., ready to accept a male and to mate. One or more periods of …

The meaning of ESTRUS is a regularly recurrent state of sexual receptivity during which the female of most mammals will accept the male and is capable of conceiving : heat; also : a …

The estrus cycle, the reproductive system in most mammals, begins after puberty when reproductive hormones activate in sexually mature females. The cycle lasts approximately four …

Estrus is characterized by sexual receptivity in females, i.e., when animals are “in heat.” Metestrus, which is also known as diestrus I, is marked by a full decline in levels of estrogen …

Estrus, derived from the Greek word "oistros," refers to a period in the reproductive cycle of female mammals when they are receptive to mating. This phase is characterized by a complex …

the recurrent, restricted period of sexual receptivity in female mammals other than human females, marked by intense sexual urge. See also estrous cycle. Called also estruation, …

The female panda is in estrus for only 24 to 48 hours per year. Just before the mother seal departs for the sea, she comes into estrus and mates.

Estrus, commonly known as the 'heat' period, is a distinct phase in the estrous cycle of most female non-primate mammals. It is characterised by a period of intense sexual receptivity, …

The estrous cycle is generally divided into the four stages of proestrus, estrus, metestrus, and diestrus. On cytological evaluation, these stages are defined by the absence, presence, or …