Composition of the Extracellular Matrix of Lymphatic Novel Threadlike Structures: Is It Keratin?
Figure 4
Transmission electron microscopic image of cross sections of a novel threadlike structure (NTS) within a rabbit lymphatic vessel. (a) A low-magnification image of an NTS contained within the lymphatic vessel. The dotted square is magnified in (b). (b) The NTS consists of many extracellular fibers (asterisks). Note the nucleus-like highly electron-dense structure (arrow) in the sinus. This structure corresponds to the asterisk in Figure 3(b). (c) High-power magnification of the dotted square in (b), which shows distinctive fibers (~100 nm in diameter) with narrowly spaced striations (arrows). Scale bars in (a), (b), and (c) are 20 μm, 2 μm, and 200 nm, respectively.
