Final answer:
T lymphocytes, also known as T cells, are able to move back and forth between the blood and lymph nodes. Hence, the statement is true.
Step-by-step explanation:
T lymphocytes, also known as T cells, are able to move back and forth between the blood and lymph nodes.
On maturation, T lymphocytes circulate to various destinations, including lymph nodes scattered throughout the body. These lymph nodes house large populations of T cells, B cells, dendritic cells, and macrophages.
Lymphocytes migrate from the blood to the lymph nodes in order to capture and process antigens and inform nearby lymphocytes about potential pathogens. After this process, lymphocytes can return to circulation to continue their immune response.