vídeos de stock, filmes e b-roll de mid shot of a biohazard warning sign and a restricted area notice on entrance to a laboratory with scientists carrying out experimental tests with... - símbolo de resíduos biológicos00:15
vídeos de stock, filmes e b-roll de scientists in laboratory working on vaccine research; 1982 - símbolo de resíduos biológicos00:11
vídeos de stock, filmes e b-roll de views inside the clinical biomanufacturing facility in oxford, uk, with signs warning of the biohazards caused by testing vaccines for illnesses like... - símbolo de resíduos biológicos00:15