Navegar por los elementos (20655 total)

In December 2019, the Wuhan Municipal Health and Sanitation Commission (Hubei Province, China), the Chinese authorities identified a new type of virus called COVID 19. The WHO declared a state of global pandemic and many governments  decreed a period…

Background: The first COVID-19 case in the US was diagnosed late January 2020. In the subsequent months, cases grew exponentially. By March 2020, SARS-CoV-2 (the novel coronavirus that causes COVID-19) was a global pandemic and the US declared a…

Background. Metagenomics is an approach for characterizing environmental microbial communities in situ, it allows their functional and taxonomic characterization and to recover sequences from uncultured taxa. This is often achieved by a combination…

Este artigo descreve a anteriormente desconhecida diversidade molecular de amostras brasileiras de Coronavírus canino (CCoV). Vinte e duas amostras foram submetidas à análise da sequência parcial do gene codificador da proteína de membrana, sendo 12…

Background: angiotensin converting enzyme 2 (ACE2) is the receptor used by SARS-CoV-2 to infect human cells and produce infection in humans.Objective: to compare the sequence of the receptor with those of other animal species, in order to extract…

HIV-1 viruses, which are predominant in the family of HIV viruses, have strong pathogenicity and infectivity. They can evolve into many different variants in a very short time. In this study, we propose a new and effective alignment-free method for…

Se presenta información sobre la variación morfológica de la rana Phyllomedusa ecuatoriana, con la descripción del renacuajo, vocalizaciones, anotaciones sobre la historia natural y distribución, basada en material recientemente recolectado en la…

COVID-19 poses a major threat to global health and socioeconomic structures, and the need for a highly effective, antimicrobial face mask has been considered a major challenge for protection against respiratory diseases. Here, we report the…

The objective of the investigation was to evaluate the effect of four phosphorus sources plus filterpie with or without the biofertilizer Azotofos on the available phosphorus in the soil at different moments afterthe treatment. An experiment in…

Lupane-type pentacyclic triterpenes such as betulin and betulinic acid play an important role in the search for new therapies that would be effective in controlling viral infections. The aim of this study was the synthesis and evaluation of in vitro…