FIG. 6.

High magnification of spreading pellicles, fixed with conventional methods for SEM, with bacilli arranged along the long axis of the cord. SEM micrographs at high magnification show details of cords formed in liquid medium by rough colonies of M. chubuense (A), M. gilvum (B), M. marinum (C), M. obuense (D), M. parafortuitum (E), and M. vaccae (F) in samples processed following conventional SEM procedures of fixation with aldehydes. The images are representative of images obtained from four different cultures.