Betacoronavirus the Latin “corona” meaning crown or halo, referring to their image under electron microscopy of crown-like spikes on their surface similar to the solar corona. This morphology is created by the viral spike (S) peplomers, which are proteins that populate the surface of the virus and determine host tropism. The order Nidovirales is named for the Latin nidus, which means nest. It refers to this order’s production of a 3' co-terminal nested set of subgenomic mRNA's during infection. Betacoronavirus Betacoronaviruses are one of four genera of coronaviruses of the subfamily "Coronavirinae" in the family "Coronaviridae", of the order "Nidovirales". They
Wastewater discharge standards in Latin America skin and also several problems in the respiratory system. This is a component present in the industries of chemicals, leather, textile, electro painting among others. The minimum requirement for this element is presented in Bolivia (0.1 mg/lt), and the maximum is presented in Mexico(0.75 mg/lt). Despite Brazil being one of the main producers of chromium, it doesn't have a maximum limit as do other countries. Wastewater discharge standards in Latin America Wastewater discharge standards protect water sources from pollution and mismanagement. Each country in Latin America has its own set of standards, and these vary according to types of water