Results 101 to 110 of about 835,855 (305)

Assessment of upper premolar morphological traits as reliable phylogenetic indicators [PDF]

open access: yes, 2002
Upper premolar size and cusp heteromorphy have been used in several studies that argue for alternative phyletic placements of early and middle Miocene fossil hominoids relative to extant primate clades.
Blundell, Louie Chantale
core  

Phylogenetic relationships of the Wolbachia of nematodes and arthropods [PDF]

open access: yes, 2006
Wolbachia are well known as bacterial symbionts of arthropods, where they are reproductive parasites, but have also been described from nematode hosts, where the symbiotic interaction has features of mutualism.
Katelyn Fenn   +13 more
core   +2 more sources

Region‐Specific Profiling of the Gut Microbiome and Metabolite Landscape in Response to Dietary Intervention Using Electronics‐Free Ingestible Smart Sampling Capsules

open access: yesAdvanced Materials Technologies, EarlyView.
Region‐specific profiling of the gut microbiome is achieved non‐invasively using electronics‐free ingestible sampling capsules that activate at defined intestinal sites through stimuli‐responsive coatings. Deployed in a porcine dietary intervention model, the capsules resolve spatially distinct, fiber‐driven shifts in microbial composition and short ...
Devendra Sarnaik   +8 more
wiley   +1 more source

Chemical Screening Identifies Danofloxacin as a Self‐Renewal Agonist of Embryonic Stem Cells through Alleviation of HDAC1‐Mediated Deacetylation of Tert and Prdm10

open access: yesAdvanced Science, EarlyView.
This study identified Danofloxacin as a novel supporter of the maintenance of mouse embryonic stem cell (ESC) pluripotency. It functions partially by inhibiting HDAC1, which increases specific histone acetylation marks and activates key genes like Tert and Prdm10.
Yan Zhang   +8 more
wiley   +1 more source

Phylogenetic relationships of Cryptosporidium parasites based on the 70- kilodalton heat shock protein (HSP70) gene [PDF]

open access: yes, 2000
We have characterized the nucleotide sequences of the 70-kDa heat shock protein (HSP70) genes of Cryptosporidium baileyi, C. felis, C. meleagridis, C. muris, C. serpentis, C. wrairi, and C. parvum from various animals.
Sulaiman, I.   +4 more
core  

Disentangling the fundamental branching patterns of phylogenetic divergence to refine eco‐phylogenetic analyses [PDF]

open access: yes, 2019
Aim: Previous studies have shown that phylogenetic divergence (i.e. the average phylogenetic displacement between species in a community) is highly sensitive to the underlying branching patterns of phylogenies, suggesting that there is a need to ...
Rafael Molina‐Venegas   +6 more
core   +1 more source

Gonadotropin‐Inhibitory Hormone (GnIH) and Its Receptor GPR147 Mediates Acute Stress‐Induced Activation of the Locus Coeruleus‐SAM Axis

open access: yesAdvanced Science, EarlyView.
ABSTRACT Gonadotropin‐inhibitory hormone (GnIH, also known as RFamide‐related peptide‐3, RFRP‐3) is a hypothalamic neuropeptide that regulates vertebrate reproduction via its receptor GPR147. Although GnIH is known to mediate stress‐induced reproductive suppression, its role in broader stress responses remains unclear.
Jiani Zhang   +18 more
wiley   +1 more source

The complete chloroplast genome sequence of Abies beshanzuensis, a highly endangered fir species from south China

open access: yesMitochondrial DNA. Part B. Resources, 2018
Abies beshanzuensis is critically endangered and endemic to Zhengjiang province of China, with only three surviving individuals. In present study, we reported the complete chloroplast (cp) genome of Abies beshanzuensis.
Yi-Zhen Shao   +4 more
doaj   +1 more source

Adult Sex Ratio as a Demographic Feedback Linking Mating Systems, Parental Care, and Evolution

open access: yesAdvanced Science, EarlyView.
Breeding systems are some of the most diverse social behavior, and our team is investigation the evolutionary causes of this diversity. This review summarises our research carried out at the University of Bath. We argue that demographic components of wild populations, especially the adult sex ratio, plays a key role driving breeding system variation ...
Tamás Székely, Oscar G. Miranda
wiley   +1 more source

The complete mitochondrial genome and phylogenetic analysis of Epitonium scalare (Gastropoda, Epitoniidae)

open access: yesMitochondrial DNA. Part B. Resources, 2019
The complete mitochondrial genome of the Epitonium scalare has been determined in this study. The complete genome (mtDNA) is 15,140 base pairs (bp) in length and contained of 13 protein-coding genes, two rRNA genes, and 22 tRNA genes.
Yahong Guo   +6 more
doaj   +1 more source

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