Liquid and lyophilized samples of Lachesis muta venom were stored at different temperatures and for different periods of time, and analyzed by polyacrylamide gel electrophoresis (PAGE) and immunoelectrophoresis. Only slight ...

A survey was conducted in 30 fields located at three different altitudes in Cartago, Costa Rica’s main potato producing area. Twenty plants were sampled per farm, for a total of 600 samples with 200 samples per altitude. ...

Between September 1979 and September 1981 a field study was conducted on the etiology of diarrhea' disease in the area of Puriscal, Costa Rica. The presence of enteric pathogens was investigated in the stools of 267 ...

Se obtuvieron 74 ejemplares de cambute (Strombus gracilior) de Playa Panama (100 35' 45" N. 840 40' 09" W). Costa Rica. La proporción de sexos fue de 1:1 y el ámbito de talla 70-80mm (longitud total). El rendimiento promedio ...

Se realizó un estudio de los dermatoglifos digitales y palmares en 286 amerindios Bribri y Cabécar ubicados en las vertientes Atlántica y Pacífica del Sur de Costa Rica. No se halló diferencias significativas entre los ...

From 1982 to 1987 infant and preschool Costa Rican children with acute diarrhea were studied. Cryptospo­ ridium (Tyzzer 1912) and other agents of diarrhea were invetigated. Criptosporydium oocysts were diagnosed in Giemsa ...

This paper describes an outbreak of paralytic shellfish poisoning (PSP), affecting human populations on the Pacific Coast of Costa Rica in October 1989. Numbness in arms, face and legs occurred 30 to 45 minutes after ...

Most of the research about viral interactions with human chromosomes was done during the sixties and early seventies and very few was performed after the human immunodeficiency virus (HIV) appearance as an epidemic in ...