Citation: R. Achi et L. Mata, OOCYST SIZE OF CRYPTOSPORIDIUM SP (APICOM PLEXA, CRYPTOSPORIDILDAE) SUGGEST THE PRESENCE OF CRYPTOSPORIDIUM-PARVUM IN COSTA-RICAN CHILDREN, Revista de biologia tropical, 45(1B), 1997, pp. 615-618
Citation: R. Achi et al., SERUM ANTIBODY-TITERS TO SHIGELLA LIPOPOLYSACCHARIDES AND INVASION PLASMID ANTIGENS IN HEALTHY COSTA-RICAN AND SWEDISH WOMEN, Scandinavian journal of infectious diseases, 26(3), 1994, pp. 329-337
Citation: Pd. Cam et al., ANTIBODIES AGAINST INVASION PLASMID CODED ANTIGENS OF SHIGELLAE IN HUMAN COLOSTRUM AND MILK, Acta microbiologica Hungarica, 39(3-4), 1992, pp. 263-270