III. Translate into Russian

immunology: to study immunology; knowledge of immunology; to deliver a lecture in immunology; to know immunology well.

to defend: to defend the organism; to defend life; to defend children; I can’t defend you; defending; defense; defensive.

agent: what agent is it? Infectious agent; different agents; there are some agents here; to reveal some agents; to determine those agents.

environment: to keep our environment clean; contaminated environment; to avoid this environment.

barrier: mechanical barrier; physical barrier; to destroy this barrier; to be defended by the barrier.

to encompass: to encompass many layers; to encompass some fields; to encompass a lot of subjects.

surface: to cover the surface; to increase the surface; to decrease the surface; to injure the surface; a smooth surface; a rough surface.

potentially: potentially harmful; potentially useful; potentially fatal; potentially healthy; potentially ill; potential.

injurious: injurious agents; injurious substances; injurious particles; injurious environment.

beneath: beneath the tissue; beneath the bed; beneath two layers; beneath the organ; beneath the barrier.

major: major vein; major artery; major blood vessel; major lymphatic node; major operation; majority.

property: functional properties; different properties; to have many properties; to impair major properties; vital properties.

specificity: to understand its specificity, to find out some specificity, extreme specificity, specific, to specify.

ability: the ability to distinguish, the ability to recognize, Good ability, bad abilities, able

recognize: to recognize at once, to recognize with difficulty, I can’t recognize him, recognition.

distinguish: to distinguish among different molecules, to distinguish among infectious agents.

discriminate: to discriminate between cells, to discriminate between substances, discrimination.

coexist: coexist peacefully, they can’t coexist in this environment.

innumerable: innumerable contacts, innumerable agents, innumerable encounters, innumerable microorganisms,

memory: good memory, bed memory, what’s the matter with your memory something’s wrong with his memory, memorable

subsequent: subsequent encounter, subsequent response, subsequent conversation, subsequent delivery, subsequently.

encounter: a strange encounter, to prevent the encounter, many encounter, the first encounter

provoke: to provoke a response, to provoke rapidly, to provoke slowly, provoked,

vigorous: vigorous response, vigorous reaction, vigorous decision, vigorously

acquired: acquired immunity, acquired habit, acquired knowledge, acquired resistance, acquisition

temporary: temporary immunity, temporary difficulties, temporary impairment, temporary disease,

serum: blood serum, foreign serum, immune serum, plague serum, test- serum, to get protective serum.

IV. Match the definitions

immunology	having a limited duration or use
ability	a liquid extracted from the tissues of an immunized animal used as an antitoxin
barrier	a structure that prevents passage
coexist	the mental ability to store past experiences and recall them at will
distinguish	an unplanned or unexpected meeting
encounter	the combination of external conditions
environment	to differentiate between things
influence	to exist together
memory	the power to produce effects
serum	the study of immunity and immune system
temporary	physical or mental power to perform