After the macrophage fails the Helper T Cell stimulates the B cells (create antibodies) if pathogen is extracellular and Cytotoxic T Cells (killer T cells, release perforin) if pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
<span>Hope that's helpful.</span>
The answer is Regeneration of Neural Tissues
Axon regeneration has three phases: sprouting, elongation, and maturation (McQuarrie, 1983). As Schwann cells dedifferentiate and proliferate, the proximal stumps of the axons sprout by the actin-driven formation of growth cones (Sinicropi and McIlwain, 1987).
Answer:
d
Explanation:
Im pretty sure that the answer is d because how could technology cause more NATURAL disasters and also i took the USATestprep
Answer:
A
Explanation:
Algae, grass, and sunflowers all produce their own food since they can't consume anything.
