The somatostatin cells (D cell) of pyloric region in shao ducks of 1,10,16 and 22 weeks old were marked with ABC immunohistochemical technique to study their shape and distribution.

用ABC免疫组织化学方法，标记1，10，16，22 周龄期绍鸭幽门区生长抑素免疫反应细胞（D 细胞），观察细胞的形态、分布，计数幽门区单位面积内D 细胞的数目。

youdao

According to the latest study, birds' wings evolved from the forearms of their ancestors and over time their whole body shape was determined by the covering of feathers.

根据最新研究，鸟类的翅膀是从它们祖先的前臂进化而来。一直以来，它们的身体造型由覆盖的羽毛决定。

youdao

According to the latest study, birds' wings evolved from the forearms of their ancestors and over time their whole body shape was determined by the covering of feathers.

最新研究表明，鸟类的翅膀是由其祖先的前臂进化而来的，随着时间的推移，覆盖全身的羽毛决定了它们的整个体型。

youdao

The study shows that traditional elements that shape a person's identity, such as their religion, ethnicity, job and age are less important than they once were.

BBC: Web 're-defining' human identity says chief scientist