Dr. Murai Éva szerk.: Parasitologia Hungarica 19. (Budapest, 1986)

nancy (at or beyond the 15th day) died of the same infection one or two days later. Their delayed death can be explained partially by their greater body mass (blood volume). This is shown in Table 1 in which mortality data of a group of 38 mice, infected subcutaneously with 7xl0

4 trypanosomes for antigen production, are presented. Species of mouse Colour Days ( 1 >f death 2 after in 3 fection 4 5 C 57 B1/6 black 3 1 BD F 1 black 1 2 1 DBA/ 2 grey 3 1 BALB/C white 2 2 A/ Sn white 3 1 CBA/Co grey 2 2 Japanese dancing mouse black pied 1 1 2 Swiss random white 2 2 Vole grey * Each of the four voles (average mass of 28-36g) survived the infection. Fig. 3: Intraperitoneal infection of inbred mice with a medium dose (around 2x10 trypanosomes) (Each group contained four mice except one which consisted of four voles)