<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>
Point-source pollution is easy to identify. As the name suggests, it comes from a single place
B.
Many Scientist Helped Developed It Over Many Decades
Hope This Helps.
Answer:
Gene therapy
Explanation:
Gene therapy is the replacement of defective genes with healthy genes in order to treat disease.