homodimer. this protein is a glycosylated mitogen that specifically acts on endothelial cells and has various effects, including mediating increased vascular permeability, inducing angiogenesis, vasculogenesis and endothelial cell growth, promoting cell migration, and inhibiting apoptosis. elevated levels of...
ganglia . [ ] all animals more advanced than sponges have nervous systems. however, even sponges , unicellular animals, and non-animals such as slime molds have cell-to-cell signalling mechanisms that are precursors to those of neurons. [ ] in radially symmetric animals such as the jellyfish and hydra...
pain or cruelty should be inflicted. the killing should serve an important use. the killing should involve a minimum of waste. let's see how the north american fur trade stacks up when measured against these four widely accepted criteria. . the existence of the species should not be threatened. this...