Bigaj J, Urbańska-Stopa M, Płytycz B
Laboratory of Electron Microscopy, Academy of Agriculture, Kraków, Poland.
Folia Histochem Cytobiol. 1991;29(1):45-7.
Mast cells are common in the thymic parenchyma of the European common frog, Rana temporaria. They are stained meta chromatically with toluidine blue and the majority of them are impregnated with silver during the argentaffin reaction. The latter phenomenon indicate that these cells store serotonin. At the ultrastructural level, mast cells contain specific granules with electron-dense and electron-lucent parts. The silver grains are located exclusively over the electron-lucent part of the mast cell granules indicating that serotonin is stored just in this compartment.
肥大细胞在欧洲普通青蛙（林蛙）的胸腺实质中很常见。它们用甲苯胺蓝进行异染，并且在嗜银反应期间，大多数肥大细胞都被银浸染。后一种现象表明这些细胞储存5-羟色胺。在超微结构水平上，肥大细胞含有具有电子致密和电子透明部分的特定颗粒。银颗粒仅位于肥大细胞颗粒的电子透明部分上方，这表明5-羟色胺仅储存在这个区域。
