<span>Tight junctions, at the site of a tight junction, cells are held tightly against each other by many individual groups of tight junction proteins called claudins, each of which interacts with a partner group on the opposite cell membrane. For example, the tight junctions between the epithelial cells lining your bladder prevent urine from leaking out into the extracellular space.</span>
Answer:
divots or holes
Explanation:
they hit at a high speed and make a divot in the ground
Answer:
c
Explanation:anitbodies are attached to the body of the pathogens then they r eliminated
I believe its large blue vessel also known as vena cava