Sobczak E, Kocoń J
Zentralbl Mikrobiol. 1983;138(5):375-90.
Bacteria belonging to Propionibacterium genus reveal a characteristic shape of short rods. Their length is from 0.8 micrometer to 1.5 micrometer and their width reaches from 0.3 micrometer to 0.5 micrometer. Most bacteria of this genus have a constant ratio of cell length and their diameter is 2: 1. Their surface is smooth and has no cilia. Certain species of this genus, grown on liquid media, demonstrate the capacity of developing involution forms and of linking the cells into greater complexes which may appear in a form of flocculus. The characteristic feature, distinguishing this genus of bacteria from other ones, is that on their surface, the undefined scars and not-stated till now, structural formations were visible.
丙酸杆菌属细菌呈现出短杆状的特征形态。它们的长度为0.8微米至1.5微米，宽度为0.3微米至0.5微米。该属的大多数细菌细胞长度与直径的比例恒定为2:1。它们的表面光滑，没有纤毛。该属的某些物种在液体培养基上生长时，表现出形成退化形态以及将细胞连接成更大复合体的能力，这些复合体可能以絮状物的形式出现。将该属细菌与其他细菌区分开来的特征是，在它们的表面可见未明确的疤痕以及至今未说明的结构形成物。
