Publications

further studies on the relative importance of guatemalan blackfly species as vectors of onchocerca volvulus.		1979	442198
[custom freezing of semen in beef-cattle production in central america].		1975	770124
entomological studies at an enzootic venezuelan equine encephalitis virus focus in guatemala, 1977-1980.	the ecology of several potential mosquito vectors of venezuelan equine encephalitis (vee) alphavirus was studied in an enzootic focus of that virus on the pacific coast of guatemala over a four-year period. four species-culex taeniopus, mansonia titillans, culex nigripalpus and aedes taeniorhynchus-were most prevalent during the wet season when transmission normally occurs. however, only cx. taeniopus yielded vee virus. the bloodfeeding patterns of these species revealed that ae. taeniorhynchus ...	1986	2873752
[residues of chlorinated pesticides in human milk in guatemala].		1973	4265719
studies of patois group arboviruses in mexico, guatemala, honduras, and british honduras.		1972	4400811
interactions of nutrition and infection.		1968	4976616
[vibrio fetus in guatemala].		1966	5241365
[bovine rabies in the departamento de guatemala. (guatemala)].		1967	5245494
epidemiological aspects of toxoplasmosis.		1966	5975767
enzyme-linked immunosorbent assay (elisa) as a diagnostic tool for guatemalan onchocerciasis using a bovine filaria (onchocerca gutturosa) antigen and blood samples collected on filter paper.		1983	6358595
the immune response of the mammary gland and its significance for the neonate.	the immune response of the mammary gland is dominated by local production of secretory iga antibodies (siga). these milk antibodies, amounting to about 0.5-1 g/day throughout lactation, are directed against food proteins and microorganisms often present in the intestine. this is presumably explained by the enteromammaric link: after antigenic exposure in the peyer's patches of lymphoid cells they home to various exocrine glands, including the mammary gland. similarly, lymphoid cells from the bro ...	1984	6391286
a neglected mayan galactagogue - ixbut (euphorbia lancifolia).	a herbal tea, made of leaves of ixbut (euphorbia lancifolia schlecht.), has been used for several centuries by postpartum mayan women in guatemala to stimulate and increase the flow of mother's milk. ixbut, when mixed with cattle fodder, is reputed to have increased milk yields in cows. to date, the active principle of ixbut has never been isolated. however, this medicinal herb, a natural galactagogue of central american origin, would appear to be worthy of further chemical and pharmacological s ...	1982	7033669
food antibodies in milk from guatemalan women.	this study investigates the presence of antibodies against food products in milk samples from 30 guatemalan women of 3 different socioeconomic status: 10 rural poor, 10 urban poor, and 10 urban privileged. the 3 groups had varied dietary habits. both the rural and urban poor mothers do not consume cow's milk. black beans are consumed more often by the urban groups while soy bean products are consumed by both rural and urban poor regularly. milk samples were collected from the mothers. the ...	1981	7196944
bovine and equine onchocerciasis in guatemala, especially in san vicente pacaya.		1981	7241286
epidemiology of babesiosis and anaplasmosis in south and central america.	babesiosis (babesia bovis and babesia bigemina) and anaplasmosis (anaplasma marginale) affect native cattle from uruguay and northern argentina to guatemala. the distribution of babesia follows the dissemination of the tick vector. seroepidemiological studies showed that enzootic instability exist in herds in several areas of the region. however, clinical cases occurred less frequently than expected. the babesial tick infection rate is related to the vector abundance which in turn is regulated b ...	1995	7597777
ticks and tick-borne disease in guatemalan cattle and horses.	blood samples and ticks were collected from 48 cattle and 74 horses from seven sites in the peten region of guatemala. data on body condition, mucous membrane capillary refill time and tick infestation levels were recorded for each animal in the study. horses had significantly higher levels of tick infestation than cattle, as well as poorer body condition scores. seroprevalence of babesia spp. was 95.8% for b. bovis in cattle, 89.6% for b. bigemina in cattle, and 92.7% for b. equi in horses. ser ...	2005	15936147
effects of bovine serum concentrate, with or without supplemental micronutrients, on the growth, morbidity, and micronutrient status of young children in a low-income, peri-urban guatemalan community.	to determine the effects of dietary supplements containing bovine serum concentrate (bsc, a source of immunoglobulins) and/or multiple micronutrients (mmn) on children's growth velocity, rates of common infections, and mn status.	2008	17299460
[modified-habitat use by tropical forest-dependent birds in the caribbean region of guatemala].	modified-habitat use by tropical forest-dependent birds in the caribbean region of guatemala. as natural areas are reduced into isolated remnants, the importance of secondary habitats for species conservation will increase. consequently, the conservation value of human-modified or created secondary habitats must be determined. in this study, we evaluated the conservation potential of three habitats associated to cattle ranching (riparian forest, live fence, and pasture) for tropical forest birds ...	2009	19637718