Steve Mercer/Photographer's Choice/Getty Images. Definition: The acronym HTTP stands for Hyper Text Transfer Protocol-the technology used to communicate between web servers and web users. This protocol is the foundation for large, multi-functioning, multi-input systems-like the World Wide Web.efinition: The acronym HTTP stands for Hyper Text Transfer Protocol-the technology used to communicate between web servers and web users.
B. The small terminal villi of a term placenta (hematoxylin-eosin, Ã10). C. Vasculosyncytial membrane (arrows) is the hallmark of a term villus, near fusion of the trophoblast basement membrane with the fetal capillary endothelium, with adjacent normal syncytial knots (hematoxylin-eosin, Ã40).
Written By: Allantois, an extra-embryonic membrane of reptiles, birds, and mammals arising as a pouch, or sac, from the hindgut. In reptiles and birds it expands greatly between two other membranes, the amnion and chorion, to serve as a temporary respiratory organ while its cavity stores fetal excretions.