SAN FRANCSICO -- Concern about animal and pet transmission of COVID-19 increased after a tiger at the Bronx Zoo in New York City, tested positive for the virus and developed a cough. "We live in a ...

MUNICH, Germany — A dual-optic design may prove useful for accommodating IOLs, according to a speaker here. The combination of two optics in one IOL may increase the pseudoaccommodative effect of the ...

The flow of water within a muscle fiber may dictate how quickly muscle can contract, according to a new study. The flow of water within a muscle fiber may dictate how quickly muscle can contract, ...

A drug currently in clinical trials for treating symptoms of Parkinson's disease may someday have value for treating heart failure, according to results of early animal studies. A drug currently in ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.

ALTHOUGH the action of cuprammonium hydroxide on cellulose has been studied in considerable detail, comparatively little is known of its effect on keratin, except that under certain conditions hair ...