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

大熊通过求偶叫声和气味住处传递发情求偶信息。

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.

层和子宫外膜中，动情期着深，动情后期着，动情间期表达量明显回升，动情前期比动情期着稍。