An Arsenic-76 radiotracer to study the routes of assimilation, hemolymph distribution, and tissue inventories in the bioindicator organism Pomacea canaliculata.

The aim of this work was to study the absorption, distribution through the hemolymph, and bioaccumulation of arsenic by the freshwater Pomacea canaliculata using a short-lived tracer (As, t: 1.07 d) with high specific activity. Arsenic travels mainly dissolved in the plasma of the snail's hemolymph.

Prevalence of (Apicomplexa: Eimeriidae) Oocysts in the Environment of a Gyrfalcon () Breeding Center in the United Arab Emirates.

A total of 356 gyrfalcon () fecal, fomite, and environmental samples were collected from a breeding center located in the United Arab Emirates to assess the prevalence of species oocysts in the environment. These included 136 samples (38%) from fomites and fecal samples from chicks at 0 to 10 days old, 29 samples (8%) at 15 days old, 23 samples (6%) at 60 days old, 7 samples (2%) at 67 days old, and 24 samples (7%) at 70 days old. In addition, 105 samples (29%) were collected from the environment of 13 breeding chambers, and 32 samples (9%) from the environment of 17 juvenile falcons.

INTER- AND INTRA-OBSERVER AGREEMENT IN THE MILCH AND WEISS SYSTEMS.

Objective: The aim of this study is to estimate the inter- and intra-observer agreement of the Weiss and Milch classification systems in radiological studies of fractures of the lateral humeral condyle in pediatric patients.

Methods: An agreement study was performed with non-probability sampling of consecutive cases with a sample size of a hundred radiological studies, which were evaluated by three experienced orthopedic surgeons and three resident physicians; following a thorough comparison of both inter- and intra-observer agreements over a six-week period based on the Fleiss' kappa, which was used to determine the inter- and intra-observer agreement rates of both classifications.

Results: The overall reliability of the entire group of evaluators for the Milch classification in the inter-observer evaluation was κ = 0.

Anti-glioma properties of DVL, a lectin purified from Dioclea violacea.

Plant lectins have been studied owing to their structural properties and biological effects that include agglutinating activity, antidepressant-like effect and antitumor property. The results from this work showed the effects of the lectin extracted from the Dioclea violacea plant (DVL) on the C6 rat glioma cell line. DVL treatment was able to induce caspase-3 activation, apoptotic cell death and cellular membrane damage.

Review of the Eriococcidae (Hemiptera: Coccomorpha) infesting Fabaceae in Argentina, with descriptions of three new species of Signoret.

Three new species of Eriococcidae from Argentina, namely Acanthococcus haywardi Juárez & González sp. nov., A.

Heavy metal and trace elements in riparian vegetation and macrophytes associated with lacustrine systems in Northern Patagonia Andean Range.

Vegetation associated with lacustrine systems in Northern Patagonia was studied for heavy metal and trace element contents, regarding their elemental contribution to these aquatic ecosystems. The research focused on native species and exotic vascular plant Salix spp. potential for absorbing heavy metals and trace elements.

Riboflavin acetate induces apoptosis in squamous carcinoma cells after photodynamic therapy.

Several research efforts have been focused on finding newer and more efficient photosensitizers for photodynamic therapy (PDT). Although, it was demonstrated that riboflavin is an efficient photosensitizer for PDT, the effect of its ester derivate, riboflavin 2',3',4',5'-tetraacetate (RFTA), which has higher cellular uptake, has not been well defined. To evaluate the cell death generated by applying RFTA as the photosensitizer in PDT in a human cancer cell line of squamous carcinoma (SCC-13), these cells were incubated with riboflavin and its ester derivate, RFTA followed by irradiation with different blue light doses.