Current thinking on how the Toxoplasma gondii parasite invades its host is incorrect, according to a study published today in Nature Methods describing a new technique to knock out genes. The findings could have implications ...
Definition. Coral bleaching is a process whereby the coral colonies lose their colour, either due to the loss of pigments by microscopic algae (zooxanthellae) living in symbiosis with their host organisms (polyps), or because these zooxanthellae have been expelled.
To act as or use a bleach. 2. To become white as a result of the loss of algal symbionts, usually following an environmental stress such as increased water temperature. Used of coral. n. 1. A chemical agent used for bleaching. 2. a. The act of bleaching.