The lymphocytes that enter tissues and directly attack antigens are cells.

Phagocytes

Explanation:

Phagocytes are white blood cells (leucocytes) that move into tissues that have been invaded with foreign material such as bacteria, for example when the skin is cut and infected. Their name comes from the Greek "phagein" to eat. There are different kinds of phagocytes and their main characteristic is that they resemble amoebas. They have pseudopods or false feet that help them engulf (or "eat") the bacteria which they then envelop in vacuoles where they are destroyed. This process is called phagocytosis.

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above