Fig. 9
From: Development and characterization of a eukaryotic expression system for human type II procollagen
Transmission electron microscopy (TEM) shows evidence of highly ordered collagen fibrils. TEM images showing a section of a fibril formed in vitro from Lys-C-treated recombinant type II procollagen, exhibiting the dark/light D-banding pattern of a well-ordered structure, and showing substructure within each D period. Fibrils were negatively stained using 3 % uranyl acetate. a Scale bar = 500 nm. b Scale bar = 100 nm