officially agreed or accepted as satisfactory. To have a positive opinion of someone or something.

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 start doing again after a break, pause, or stop.

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

Concerning, used in or practicing neurology.

To believe, based on the evidence; suppose.

keep safe from harm or injury.

For a reason.

Occasion when something can be seen, e.g. a movie. To lead someone somewhere; point them to something.

in space separating things. Among two or more people who share something.

inspect person or thing thoroughly.

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

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. Over, in, across an entire thing or place.

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

Being what was wanted or needed. used to greet someone in polite or friendly way. instance or manner of greeting someone. To greet someone who has just arrived.