Electron Micrographs

Fenestrated capillary in an endocrine organ where there is extensive molecular exchange with the blood. Like continuous capillaries it is surrounded by a basal lamina, but there are rarely associated pericytes. Young, B & Heath, JW., Wheater's Functional Histology, 4th ed., Churchill Livingstone, London, 2000, p. 152.

Granulosa lutein cells of pregnancy showing ultrastructural components associated with steroid hormone synthesis: tubulo-vesicular mitochondria (m); lipid droplets (L); smooth endoplasmic reticulum (SER). Weiss, L. ed., Cell and Tissue Biology, 6th ed., Urban & Schwarzenberg, Baltimore, 1988, p. 867.