results hla-drb1*07 (rr 5.3, p = 0.0008) and hla-drb1*08 (rr n.c. p = 0.0005) were significantly associated with the risk of pbc development. patients younger than 45 years had significantly higher alanine aminotransferase (p = 0.038) and alkaline phosphatase levels (p = 0.047) than older cases. in comparison to non-cc rs12979860, patients with cc rs12979860 genotype showed an early histologica...

We report on basic natural history, life history, and diet of Priapella chamulae (Poeciliidae) from Arroyo Tres, a small creek in Tabasco, southern México. The tertiary (adult) sex ratio was heavily female-skewed, female P. chamulae produced medium-sized offspring (~2.3 mg), one clutch at a time (i.e., showed no superfetation), and relied predominantly on yolk for embryo provisioning (Matrotrop...

Joseph Hooker became one of the most influential botanists of his day. He is best remembered as a friend of Charles Darwin and an early advocate of natural selection. However, after returning to Britain from his first major voyage, Hooker spent years struggling to find a paid position that would allow him to pursue his studies of plant classification and distribution. As he worked to establish ...

Along the way there is much interesting, and certainly deeply felt, material and comment, but, as history, the book is marred by its uncritical application of modernization theory, by its over-simple ascription to each time period of consensuses about aging, in place of the messily competing discourses which were closer to reality, indeed by a general tendency to smooth out the complexities of ...

In the closing decades of the nineteenth century, natural history museums established solid communication networks, and their different audiences formed what became known as the 'museum movement'. It was within this context of exchange that William H. Flower made his 1889 speech on the roles natural history museums should play. The article analyzes his influence on Argentina's Museo da La Plata...

A better understanding of the natural history of model organisms will increase their value as model systems and also keep them at the forefront of research.