Final answer:
In healthy adults, lymphocytes make up around 20-30% of all leukocytes in the circulating blood. T cells account for 80-90% of lymphocytes, while B cells account for 10-20% of lymphocytes.
Step-by-step explanation:
In healthy adults, the percentage of lymphocytes in circulating blood is approximately 20-30% of all leukocytes.
Lymphocytes are a type of white blood cell that are involved in the immune response. There are two main types of lymphocytes: T cells and B cells.
T cells make up around 80-90% of lymphocytes, while B cells make up around 10-20% of lymphocytes.