S. WongratanacheewinW. RattanasiriwilaiR. PriwanS. SirisinhaMahidol University2018-06-142018-06-141987-06-01Journal of Helminthology. Vol.61, No.2 (1987), 151-156147526970022149X2-s2.0-0023256027https://repository.li.mahidol.ac.th/handle/20.500.14594/15279Hamsters experimentally infected with Opisthorchis viverrini had significant depression of the antibody response to sheep red blood cells. The depression was more severe with prolonged infections. Lymphoproliferative response to phytohaemagglutinin stimulation was also depressed when compared with uninfected controls. The immunodepression in these animals was abolished by anthelmintic treatment, suggesting that the immunodepressive effect is reversible and is associated with active infection. © 1987, Cambridge University Press. All rights reserved.Mahidol UniversityAgricultural and Biological SciencesImmunology and MicrobiologyArticleSCOPUS10.1017/S0022149X00009913