Dr. Murai Éva szerk.: Parasitologia Hungarica 25. (Budapest, 1992)

Growth Growth as determined by the total worm length showed a linear increase throughout the 42-day infection period and both isolates followed an almost identical growth curve with minor differences (Fig.l A,B). Complete evagination of protoscoleces and disappearance of calcareous corpuscles took place within 5 days in both isolates. Segmentation and maturation. The results obtained for the rate of segmentation and maturation of developing worms is shown in Fig. 2. No segmentation was noticed up to 12 days p.i. in either isolate. The constriction for 1st banding was noticed in 90 % of 16-day-old worms in both isolates. The worms at that stage can be easily recognized as they have a clear constriction area in the region where the partition separates the 1st segment from the scolex (Fig.l A,B). After that stage, some differences were observed in the rate of segmentation and maturation in the developing worms of the two isolates. The main differences in segmentation and maturation were observed in 20- and 40-day-old 2.5 0 12 16 20 24 28 32 36 40 42 DAYS Fig. 1. Rate of growth, segmentation and maturation oîE. granulosus in dogs infected with protoscoleces of buffalo liver (A) and lung (B) origin. - Ps: protoscolex, ba: banding, gr: genital rudiment, t: testes, c: cirrus sac, g: genital pore, o: ovary, v: vitelline gland, u: uterus, uc: uterus cells, use: unshelled eggs, gs: gravid segment, se: shelled eggs