Category: A

A yellow crystalline substance obtained from aloe.  

A declaration made in 1978 at the Conference on Primary Health Care in Alma-Ata, Russia. It stated that primary health care is the key to attaining health for all by the year 2000. Defined as essential to this were eight elements: education, food supply, safe water, maternal and child health, including family planning, immunization, prevention…

A univalent unsaturated radical found in garlic and mustard.  

Any one of the genetic variants of protein that occur in a single species. The serum from a person with one form of allotype could be antigenic to another person.  

The existence of an element in two or more distinct forms with different physical properties. A condition or state in which the same chemical substance exhibits two distinct appearances, as seen with phosphorus, which can exist as either red or yellow phosphorus.  

To the existence of an element in two or more distinct forms with different physical properties.  

Perverted appetite or sense of taste.  

In bacteria, alteration of a regulatory site on a protein that changes its shape and activity. This change is important in altering the way the organism responds to its molecular environment.  

To mental processes in relation to the external environment. Concerning the mental connection with the outside world.  

The state of having more than two sets of chromosomes derived from different ancestral species.