The impact of SARS-CoV-2 infection on term placentae.

Background: Coronavirus 2019 infection (COVID 19) is an ongoing pandemic caused by pathogenic RNA viruses called severe acute respiratory syndrome coronavirus-2 (SARS-COV-2). It has affected people of all ages, with high morbidity and mortality among the elderly and immunocompromised population. Limited information is available on the effects of COVID-19 infection on pregnancy.

Expression of the mcrA gene of Escherichia coli is regulated posttranscriptionally, possibly by sequestration of the Shine-Dalgarno region.

The polypeptides encoded by the mcrA gene were analysed using a T7 expression system. Cloned fragments of 1.6 and 1.