Matching. Match each term with the most

Question

appropriate statement.
1. ___ antigens
2. ___ B lymphocytes
3. ___ perforin
4. ___ clone
5. ___ complement proteins
6. ___ cytotoxic T lymphocytes
7. ___ interleukins
8. ___ macrophages
9. ___ memory cells
10. ___ B cells
11. ___ retroviruses
12. ___ stem cells
13. ___ natural killer cells
14. ___ vaccine
A. cells that do not divide, die in less than a
week, and secrete antibodies
B. cells that directly destroy body cells
already infected by viral or fungal
parasites, as well as mutant and cancerous
cells
C. lymphocytes that are held in reserve,
circulate in the bloodstream, and enable a
rapid response to subsequent encounters
with the same invader
D. able to lyse cells by forming pore
complexes
Chapter 38 Immunity 441
E. cells that are produced in the bone marrow,
are never changed by the thymus, and
manufacture antibodies
F. able to destroy cells but not dependent on
recognition of antigen-MHC complexes
G. a class of proteins that help cells of the
immune system communicate
H. “big eaters” that alert other lymphocytes to
the invasion of specific antigens
I. immature cells that may or may not be
committed to develop into one of several
mature cell types
J. a group of cells that are all produced
asexually from one original parent cell
K. surface patterns of nonself molecules or
particles
L. proteins released by cytotoxic T cells to
destroy target cell membranes
M. preparation injected into the body to elicit
a primary immune response
N. one of this group has been identified as the
causative agent of AIDS

Answer 1