we measured parasitemia , mortality , serum retinol , liver retinol , spleen weight , and degree of xerophthalmia in vitamin a-deficient rats ( a- ) , pair-fed control rats ( a+pf ) , and ad libitum-fed control rats ( a+al ) infected with plasmodium berghei , a rodent malarial parasite .
C0043349
xerophthalmia
C0042839
vitamin a