Results 191 to 200 of about 224,619 (282)

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

open access: yesThe Anatomical Record, Volume 309, Issue 10, Page 2873-2896, October 2026.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto   +3 more
wiley   +1 more source

Building phenotypic character matrices for phylogenetic inference: exploration of 35 years of practice

open access: yesBiological Reviews, Volume 101, Issue 5, Page 2379-2407, October 2026.
ABSTRACT Recent methodological development in phylogenetic inference has focused predominantly on molecular data. However, renewed interest in other data types, particularly morphological data, has followed from the increased recognition of the power of total evidence and tip‐dating approaches, including fossil data, for inference of time‐scaled trees ...
Melanie J. Hopkins   +9 more
wiley   +1 more source

Eye Darkening Under Dehydration Stress in the Neotropical Frog Boana punctata (Schneider, 1799)

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 8, Page 887-893, October 2026.
Dehydration induces a strong and partially reversible increase in iris pigmentation in the Neotropical frog Boana punctata. The tight relationship between iris darkening and hydration state identifies ocular pigmentation as a simple, non‐invasive physiological biomarker with broad potential for assessing hydric stress in amphibian populations ...
Ricardo Reques   +5 more
wiley   +1 more source

Cross‐Talk Between Histamine H2 Receptor and Glucocorticoid Receptor: Potential Implications in Acute Myeloid Leukemia Treatment

open access: yesPharmacology Research &Perspectives, Volume 14, Issue 5, October 2026.
ABSTRACT This study investigates the impact of histamine H2 receptor activation on glucocorticoid receptor (GR)‐mediated transcriptional activity, as well as its effects on leukemic cell proliferation and chemotherapy resistance. We demonstrate that activation of the histamine H2 receptor by its specific agonist, amthamine, enhances GR transcriptional ...
Valeria Torralba‐Agu   +5 more
wiley   +1 more source

Prevalence of Doravirine Resistance Mutations in a Large-Scale HIV-1 Transmitted Drug Resistance Survey in Buenos Aires, Argentina. [PDF]

open access: yesViruses
Cecchini D   +10 more
europepmc   +1 more source

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