estrum

They transit estrous information mainly by making courting sound and spreading special estrum scent.

大熊猫主要通过求偶叫声和气味住处情求偶信息。

In muscular layer and adventitia, the significant increase of the products was found in the anoestrum,and the density of the products was a little bit weaker in the proestrum than that in the estrum.

肌层和子宫外膜中，动情期色最深，动情后期色最浅，动情间期表显回升，动情前期比动情期色稍浅。