substance that provides nourishment essential for maintenance of life and for growth.

any of class of nitrogenous organic compounds. Groups of molecules made from amino acids.

A narrow table top for serving/preparing food. Being opposite or against something. To try to prevent, as by making a different point.

protein released by animal cells, usually in response to entry of virus, which has property of inhibiting virus replication.

To refer to or talk or write about something.

Not made into a pair.

; a white blood cell that attacks antigens (=harmful substances that the body reacts to).

(of person, organism, etc.) affected with disease-causing organism. To make people feel the same emotion you are.

sweep over something so as to surround or cover it completely.

To improve; make bigger or better.

Chemical produced by the body to control functions.

Referring to an unspecified amount or quantity. some.

advantage or profit gained. Good results or effects, something advantageous. To have a good effect or be helpful.

type of cell within body capable of engulfing and absorbing bacteria and other small cells and particles.

Ability to hold, involve or contain (e.g. liquids).