Most birds, and by that we mean 97 percent of all species, don’t have external genitalia and instead have what’s known as a cloaca (as did dinosaurs ). Seen in birds, reptiles, amphibians, some fish, ...
Antibiotics are a double-edged sword – they should be as toxic as possible to pathogenic bacteria while being harmless to the cells of the human body. An international research team led by the ...
Proliferating animal cells maintain a stable size distribution over generations despite fluctuations in cell growth and division size. Previously, we showed that cell size control involves both cell ...