Macrophage appeared at stage 14, while myoid cells and thymic APUD cells located in thymic medulla at stage 15 and their numbers slightly increased at stage 16.是什么意思_Macrophage appeared at stage 14, while myoid cells and thymic APUD cells located in thymic medulla at stage 15 and their numbers slightly increased at stage 16.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句