officially agreed or accepted as satisfactory. To formally accept something or grant permission.

substance used to stimulate production of antibodies and provide immunity against diseases. Immunogens consisting of a suspension of weakened or dead pathogenic cells injected inorder to stimulate the production of antibodies.

To do something without stopping, or after pausing.

officially compulsory, or otherwise considered essential. To demand that someone does something.

relating to anatomy, functions, and organic disorders of nerves and nervous system.

To take a job or the responsibilities of another.

To defend someone or something from harm or danger.

For a reason.

Occasion when something can be seen, e.g. a movie. To prove something to be true.

in space separating things. In the space that separates two objects.

(Medical) to test to find out what is wrong.

(of goods or services) brought into country from abroad for sale. To bring goods from one country into another.

continuing or valid to final destination. From the beginning of something until the end. moving in one side and out of other side of.

person who is studying or has expert knowledge of one or more of natural or physical sciences. People who are trained in a science.

gladly received. used to greet someone in polite or friendly way. Friendly greeting to someone who has arrived. greet someone arriving in polite or friendly way.