FIG. 4.

rPt-API-1 is specifically recognized by serum antibody from red deer (C. elaphus elaphus) infected with P. tenuis in an ELISA. Deer were uninoculated controls (A) or were inoculated orally with 10 (B), 25 (C), or 100 (D) infective larvae (L3) of P. tenuis. Arrows indicate time of equivalent secondary inoculation of L3. Thicker lines indicate periods during which infections were patent by fecal examination. Legend lists individual animals and presence (+) or absence (−) of adult P. tenuis at necropsy. NC, animals did not receive a secondary inoculation of P. tenuis L3.