Volume 45, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Using an antigen-capture, dot-blot assay, antigens were detected in the urine of 50 patients infected with . Antigens were also detected in 12/15 patients who had no detectable parasitemias 1–2 weeks after chemotherapy. By Western blotting and immunoprecipitation, four predominant antigens were identified with the following molecular masses (M) and isoelectric points (pI): antigen 1, 200 kDa, pI 6.4–6.27; antigen 2, 180 kDa, pI 5.2–4.8; antigen 3, 150 kDa, pI 5.5; antigen 4, 96 kDa, pI 5.1–4.8. These antigens were heat stable to 100°C for 5 min. Antigens were also detected in the urine of 35 patients with acute infections by Western blotting and dot-blot analysis and 10/10 patients three weeks following chemotherapy. The antigens had M of 200, 170, and 130 kDa.


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