Free fingers have many obvious advantages on land, such as in locomotion and grasping, while webbed fingers are typical of aquatic or gliding animals. But both amphibians and amniotes -- which include mammals, reptiles, and birds -- can have webbed digits. Scientists now show that during embryo development, some animal species detect the presence of atmospheric oxygen, which triggers removal of interdigital webbing.
Viruses found to use intricate 'treadmill' to move cargo across bacterial cells
Using advanced technologies to explore the inner workings of bacteria, biologists have provided the first example of cargo within bacteriophage cells transiting along treadmill-like structures. The discovery demonstrates that bacteria have more in common with sophisticated human cells than previously believed.
Of quirky channels and a fond farewell
This final installment of Generally Physiological concerns F–-selective channels, a surprising role for a tryptophan in determining channel identity, and a farewell note from the Executive Editor of The Journal of General Physiology.
(a) Bordetella pertussis...