Jones & Bartlett Learning
3. Unlike the lymph nodes, its venous sinuses are filled with blood, not lymph. 4. Via the action of macrophages and lymphocytes, the spleen filters blood similarly to the way that lymph nodes filter lymph. E. Body defenses and fighting infection. 1. Body defenses can be divided into two general categories: a. Innate (nonspecific) i. Present at ... ................
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