OBSERVATIONS ON SCHISTOSOME EGGS IN BLADDER URINE OF A SCHISTOSOMA NANJINGI-INFECTED RABBIT / 中国血吸虫病防治杂志

ABSTRACT

Objective To observe and count the number of schistosome eggs and miracidia hatched from bladder urine of a Schistosoma nanjingi-infected rabbit. Methods After the rabbit was infected with 1 000 5. nanjingi cercariae and dissected on day 75, the bladder was removed and the arlult worms in venous plexus of the bladder were counted, and schistosome eggs in the bladder urine were observed and counted. After washing the eggs with water, the eggs were incubated at 26 C , and then miracidia hatched were counted. Results The number of adult worms in bladder venous plexus was 14 pairs (28 worms) and 18 840 eggs were found in the bladder urine. The surface of eggs adhered to a lot of small granular substance. Some degenerated and black eggs were seen in the urine. The number of miracidia hatched was 874, covering 4. 6% of the total number of the eggs. Conclusion S. nanjingi is different from 5. japonicum. After the rabbit was infected with S. nanjingi a lot of schistosome eggs were shown in the urine and miracidia can be hatched out.