________ are macrophages found in and around blood channels in the liver.
Choose the correct statement about interferons.
A)Interferons are part of the complement system.
B)Interferons impart resistance to viral infections.
C)Interferons secrete cytokines which trigger apoptosis.
D)Interferons engage in agglutination and are thus similar to antibodies.
E)Interferons interfere with antigen recognition on CD 4 cells.
During inflammation, clotting does not occur at the actual site of injury due to the presence of