close - up of an fbi agent handling a lighter and showing photographs to a suspect during interrogation - scientific experiment 個影片檔及 b 捲影像00:28
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 個影片檔及 b 捲影像00:07
investigators wear latex gloves as they remove possible evidence. - scientific experiment 個影片檔及 b 捲影像00:25
a detective crosses crime scene tape to investigate a wooded area. - scientific experiment 個影片檔及 b 捲影像00:25
unrecognizable microbiology scientist, sampling with a sample bottle the water from city river for analysis - scientific experiment 個影片檔及 b 捲影像00:09
cu, selective focus, scientist dropping liquid into vial in genetic laboratory, close-up of hands, singapore - scientific experiment 個影片檔及 b 捲影像00:16
scientist hands in gloves hold sterile flask with yellow liquid. oil research and toxic liquid concept - scientific experiment 個影片檔及 b 捲影像00:32
genetic molecular laboratory: woman researcher isolates virus variants - scientific experiment 個影片檔及 b 捲影像00:14