close - up of an fbi agent handling a lighter and showing photographs to a suspect during interrogation - scientific experiment stock videos & royalty-free footage00:28
asian chinese female doctor with ppe taking mouth swab from patient coronavirus test. medical worker in protective suite taking a swab for corona virus test, potentially infected woman - scientific experiment stock videos & royalty-free footage00:10
medical technicians are looking at the microscope - scientific experiment stock videos & royalty-free footage00:13
4k video footage of scientists working in a lab - scientific experiment stock videos & royalty-free footage00:28
closeup, research and hands with pipette, medical and health with breakthrough, cure and experiment in lab. zoom, researcher or scientist with gloves, laboratory equipment or innovation for diagnosis - scientific experiment stock videos & royalty-free footage00:07
forensic scientist working at crime scene - scientific experiment stock videos & royalty-free footage00:16
investigators wear latex gloves as they remove possible evidence. - scientific experiment stock videos & royalty-free footage00:25
scientists use pipette dropper samples to test tubes.to conduct scientific experiments - scientific experiment stock videos & royalty-free footage00:20
laboratory team working with biohazardous samples. using microscope - scientific experiment stock videos & royalty-free footage00:08
unrecognizable microbiology scientist, sampling with a sample bottle the water from city river for analysis - scientific experiment stock videos & royalty-free footage00:09
young woman drops swab in a protective plastic tube. - scientific experiment stock videos & royalty-free footage00:10
laboratory tests at the virus research institute - scientific experiment stock videos & royalty-free footage00:10
b/w 1915 close up mad scientist wearing surgical mask holding test tube with smoke emerging / silent serial - scientific experiment stock videos & royalty-free footage00:04
medical tutor giving talk on dna in laboratory - scientific experiment stock videos & royalty-free footage00:15
a detective crosses crime scene tape to investigate a wooded area. - scientific experiment stock videos & royalty-free footage00:25
asian chinese female doctor with ppe taking mouth swab from patient coronavirus test. medical worker in protective suite taking a swab for corona virus test, potentially infected woman - scientific experiment stock videos & royalty-free footage00:22
asian chinese female doctor with ppe inserting nasal swab cotton swab into test tube and tighten it sealed it - scientific experiment stock videos & royalty-free footage00:13
cu, selective focus, scientist dropping liquid into vial in genetic laboratory, close-up of hands, singapore - scientific experiment stock videos & royalty-free footage00:16
forensic scientist working at crime scene - scientific experiment stock videos & royalty-free footage00:18
genetic molecular laboratory: woman researcher isolates virus variants - scientific experiment stock videos & royalty-free footage00:14
female scientist in laboratory looking in microscope - scientific experiment stock videos & royalty-free footage00:21
testing drugs to develop covid-19 vaccines - scientific experiment stock videos & royalty-free footage00:09
the world will remember their work for years to come - scientific experiment stock videos & royalty-free footage00:14
operation crossroads atom bomb test, 1946 - scientific experiment stock videos & royalty-free footage00:28
microplastic pollution in our rivers - scientific experiment stock videos & royalty-free footage00:19
doctor wakes up a cat by using electrodes connected to its brain, u.s.a., 1958 - scientific experiment stock videos & royalty-free footage00:30
scientist hands in gloves hold sterile flask with yellow liquid. oil research and toxic liquid concept - scientific experiment stock videos & royalty-free footage00:32
teacher helping teenager group of student for development mechanical arm in private classroom. - scientific experiment stock videos & royalty-free footage00:14
forensic scientist working at crime scene - scientific experiment stock videos & royalty-free footage00:10
scientists and businessman talking in laboratory - scientific experiment stock videos & royalty-free footage00:21
teacher helping teenager group of student for development mechanical arm in private classroom. - scientific experiment stock videos & royalty-free footage00:14
medical student working with chemicals at fume hood - scientific experiment stock videos & royalty-free footage00:13