Answer:
B
Explanation:
The moon moves in the earth's shadow and is blocked by the earth .
The dorsal side<span> of the </span>leopard frog<span>: a. Is a light, solid colour b. Is a coloured and patterned. Is initially cut during a dissection</span>
Answer
The worm gets coated with antibodies, which activate other cells in the immune system to secrete chemicals that kill it.
Explanation:
Production of T-helper I cytokines like IFN gamma, IL-2 and IL-18 is highly protective against helminth infection by activating the macrophage intracellular killers. Protection against mucosal eosinophil responses in which antiparasitic chemicals are released. Killing also involves direct cytotoxic mechanisms in which T- cell and NK-cells directly release antiparasitic agents like perforin and granulysin which kill the parasite.
