nutritional ( vitamin a levels , weights ) , parasitological ( adult worm burden , count of eggs in liver , stool examination ) and immunological ( ige serum levels , anti-schistosoma mansoni antibodies , lymphocyte stimulation by concanavalin a and s. mansoni antigenic extract ) parameters were studied in three groups of rats , a non-infected and normally fed control group , a s. mansoni-infected but normally fed group , and a s. mansoni-infected group with experimentally induced vitamin a deficiency .
C0042839
vitamin a
C0042842
a