Results 21 to 30 of about 2,001 (128)
Memorias do Instituto Oswaldo Cruz, 1992 Six Plasmodium falciparum protein fractions, isolated under reducing conditions, were used to immunize mice, rabbits and the squirrel monkey Saimiri sciureus. Five or seven subcutaneous injections of each antigenic preparation, in conjunction with Freund'
Antonio B. Cruz Cubas +7 more
doaj +1 more source
Hemodynamic molecular imaging of tumor-associated enzyme activity in the living brain
eLife, 2021 Molecular imaging could have great utility for detecting, classifying, and guiding treatment of brain disorders, but existing probes offer limited capability for assessing relevant physiological parameters.
Mitul Desai +7 more
doaj +1 more source
Ciencia Amazónica (Iquitos), 2014 En este artículo se proporciona información sobre la diversidad, tamaño de grupo y densidad poblacional de primates para cada hábitat diferenciado en el área de estudio.
Rolando Aquino +2 more
doaj +3 more sources
The mechanism of labor in nonhuman primates: A look inside
The Anatomical Record, EarlyView.Abstract While in humans, the flexed position of the fetus and its rotating course down the birth canal are well documented, in other primates the mechanism of labor is unknown. Despite the lack of comparative data, it is commonly assumed that the human obstetric mechanism is unique, and anthropologists have disputed when and why the transition to the ...
Melissa K. Stoller
wiley +1 more source
Molecular data highlight hybridization in squirrel monkeys (Saimiri, Cebidae)
Genetics and Molecular BiologyHybridization has been reported increasingly frequently in recent years, fueling the debate on its role in the evolutionary history of species. Some studies have shown that hybridization is very common in captive New World primates, and hybrid offspring ...
Jeferson Carneiro +3 more
doaj +3 more sources
Humans and platyrrhines share a pattern of articular variance
The Anatomical Record, EarlyView.Abstract Previous work has identified a pattern of articular shape variation in modern human limb joints, in which convex joint surfaces exhibit constrained variance relative to their more variable concave conarticulars. This pattern is notable given that joint morphogenesis is influenced by local biomechanical environments, which vary substantially ...
Haley Horbaly, Liam Zachary
wiley +1 more source
Primatas do Parque Nacional do Viruá, Roraima, Brasil
Biodiversidade Brasileira, 2018 Este trabalho apresenta o inventário consolidado de primatas do Parque Nacional do Viruá, Roraima, feito a partir da revisão da literatura e consulta ao material tombado nas coleções do Instituto Nacional de Pesquisas da Amazônia e do Museu Paraense ...
Renata Bocorny de Azevedo +5 more
doaj +3 more sources
Humans are not unique: difficult birth is common in placental mammals
Biological Reviews, Volume 101, Issue 5, Page 2214-2239, October 2026.ABSTRACT Human childbirth is widely presumed to be uniquely difficult and dangerous compared to birth in other mammals. Tight fetopelvic proportions can result in obstructed labour and contribute to high rates of maternal and neonatal mortality. Ideas summarised under the ‘obstetrical dilemma’ have contributed to this assumption by explaining difficult
Nicole D. S. Grunstra
wiley +1 more source
Ecology and Evolution, Volume 16, Issue 10, October 2026.This study examined the impact of human disturbances on arboreal and terrestrial fruit‐consuming vertebrate assemblages across three tropical forest sites in French Guiana. While species richness remained consistent across sites, results revealed significant variations in visitation rates and a shift in dominant species.
Raphaëlle Abensur +7 more
wiley +1 more source
From armadillos to sloths: Patterns and variations in xenarthran coronary anatomy
The Anatomical Record, Volume 309, Issue 8, Page 2199-2220, August 2026.Abstract Species of the superorder Xenarthra play a vital ecological role in the Neotropics. Despite their evolutionary significance, anatomical studies on their coronary circulation remain scarce. This study investigated the coronary anatomy of 82 hearts from nine Xenarthra species across the Dasypodidae, Myrmecophagidae, and Bradypodidae.
Wilson Viotto‐Souza +5 more
wiley +1 more source