Rat macrophage activity against Toxoplasma gondii studied by electron microscopy

por Chinchilla, Misael, Portilla, E., Guerrero, O. M.
Publicado 1986

Presencia de quistes en Tritrichomonas muris

por Chinchilla, M., Portilla, E., Guerrero, O. M., Marín, R.
Publicado 1987

Vegetation-environment relationships based on a life-forms c1assification in a semiarid region of Tropical Mexico

por Zavala-Hurtado, J A, Valverde, P L, Díaz-Solís, A, Vite, F, Portilla, E
Publicado 1996