"Plasmids" . "Genetic engineering" . "Coronaviridae" . "Biotechnology" . "Vaccines" . "Animal virology" . "Vaccinia" . "Cloning" . "1972 in biotechnology" . "Virus-related cutaneous conditions" . "Chordopoxvirinae" . "Cellular senescence" . "American inventions" . "Cell culture" . "Senescence" . "Molecular biology" . "Synthetic biology" . "Molecular genetics" .