In both of those cases, virus samples showed that once it was in the body, it mutated in ways that would allow it to stick to cells in the mucous membrane ... between avian, swine and human ...

It also can offer clues to underlying health conditions, such as peripheral artery disease. The anterior tibial artery passes through a tough connective tissue called the interosseus membrane after it ...

Genetic analysis of tryptases in different species suggests that these proteases proliferated and changed rapidly during mammalian evolution, arising from ancestral membrane-anchored peptidases, which ...