To rate something in importance or value.

belonging to same family or type. To tell a story, or tell about a particular event.

arrangement of and relations between parts or elements of something complex. The ways some things are built, arranged or organized. construct or arrange according to plan.

Relative capacity that interact with antigens.

causing something to occur or be done in particular way. To control exactly how something will be or act.

belonging to or forming outside. outward features.

essential or characteristic part.

leaving one with pleasantly satiated feeling. material used to fill something. To move into all parts of an area.

still existing, present, or in use. To be left behind; to continue to exist.

group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. Subsections of a genus (of plants, animals).

Most significant or important. place with high concentration of specified type of person or thing.

inner. Part of country that is far from the border, coast.

stable subatomic particle with charge of negative electricity. A negatively charged particle.

Being in attendance; being there; having turned up. period of time now occurring. To give a speech or presentation.

electrically negative.