Area code 412 is a Pennsylvania area code that covers Pittsburgh and some of the surrounding areas.Area code 412 overlays the area code of 878. Pennsylvania has area codes of 215, 267, 272, 412, 484, 570, 610, 717, 724, 814, 878.The following map shows the coverage of 412 area code. The coverage area is shown in green.ennsylvania has area codes of 215, 267, 272, 412, 484, 570, 610, 717, 724, 814, 878. The following map shows the coverage of 412 area code.
The ampicillin resistance gene (AmpR) is called a selectable marker gene and is incorporated into several plasmids that are commonly used in a wide range of genetic engineering and molecular biology experiments.
Antibiotic resistance, also known as antimicrobial resistance, is not a new phenomenon. Just a few years after the first antibiotic, penicillin, became widely used in the late 1940s, penicillin-resistant infections emerged that were caused by the bacterium Staphylococcus aureus (S. aureus).