pteryla

n.

羽区（指鸟的生羽部位）；羽管；

[Production of a supplementary pteryla in the chick embryo. I. Morphologic study]
[The spinal pteryla of the chick embryo: presumptive area, arrangement and embryonic development]
A NEW DOWNY PTERYLA IN PASSERINE BIRDS
[The mechanisms of the development of the spinal pteryla in the chick embryo]
THE METAMERISM OF THE SPINAL PTERYLA, STUDIED IN CHICKEN EMBRYO WITH LOCALIZED X IRRADIATION
[On the role of the axial organs in the differentiation of the spinal pteryla of the chick embryo]
Shipowners of Cardiff: A class by themselves: A history of the Cardiff and Bristol Channel Incorporated Shipowners' Association
pteryle spinale de l'embryon de poulet: territoire presomptif, arrangement et developpement embryonnaire
Feather pattern stability and reorganization in cultured skin.
Production d'une ptéryle supplémentaire chez l'embryon de Poulet : II. Analyse expérimentale