concept is to use those portions of the organism that are immunogenic, leaving out those that produce pathologic manifestations.

synthetic vaccine

a vaccine manufactured by biochemical means, to simulate the immunogenic portions of the organism against which the vaccine is being prepared.

tandem repeats

duplications of tandem combinations.

T lymphocyte

same as T cell. An immunologically competent white blood cell that direct the production of antibody by B lymphocytes; are responsible for cell-mediated immunity and immunological memory.

trophozoite

the stage, between the ring stage and the schizont, that occurs in the red blood cell.

tubulin

a principal protein component of microtubules (which play key roles in cell division and morphogenesis). Alpha- and beta-tubulins have been described.

vector

the mosquito that transmits the malaria parasite from one host to another.

vector competence

refers to the relative ability of a vector (relative to another vector) to transmit a specific infective agent from one host to another, implying that a competent vector is one that takes in sufficient numbers of an agent to ensure infection, supports the development or multiplication of the agent, and is able to deliver a large enough inoculum to an appropriate site in a new host to ensure infection.

vivax malaria

malaria caused by the malaria parasite Plasmodium vivax.

zoophilic

prefer to feed on animals.

zygote

an organism produced by the union of two gametes.