Morphology of the FF by TEM.

Abstract

Images of semi-thin section of a FF after microdissection (Day 0) (A) and at Day 7 (I), stained with toluidine blue observed by optical microscopy are shown and correspond to the level of the ultra-thin sections observed at these time points. Images of FF observed by TEM at different magnifications at Day 0 (B-D), Day 5 (E-H), Day 7 (J-L). Note that J was generated by merging two pictures. Regions enlarged in another picture are indicated with black frames. On panel (B), the dermis (Ds) and the follicular wall (foll wall) are indicated as well as part of the feather. A few structures are shown on the images: feather sheath (fs; empty white triangle), basal membrane (white short arrow), mitochondria (white asterisk symbol), nucleolus (n), keratin bundles (white plain arrowhead), desmosome (black plain triangle), lipid droplet (yellow plain triangle).</p