NO EXPLANATION NEEDED, ANSWER ONLY. 21. Adults of filarial worms live in: I. blood II. lymphatics III. subcutaneous tissue a. I only b. I and II only c. II only d. II and III only e. III only 22. An adult helminth parasite occasionally expelled by mouth, especially by children with fever, is: a. E. vermicularis b. E. gingivalis c. A. lumbricoides d. T. tenax e. Two of the above

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