Which of these statements about the lymphatic system is (are) true?
a. In the spleen, reticular cells form a bloodsplenic barrier.
b. The thymus is an important filter for lymphatic fluid.
c. The tonsils are areas of diffuse lymphatic tissue that increase in size with age.
d. The spleen filters blood, removing microorganisms and other foreign substances. e. all of these are true
Answer: d
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Biology
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