a test is carried out on blood in a laboratory to measure changes in cholesterol levels. - 試管 個影片檔及 b 捲影像00:08
laboratory scientist preparing pharmaceutical sample with precision syringe. drug development, pharmaceutical testing, laboratory procedure, scientific precision - 試管 個影片檔及 b 捲影像00:16
blood test sample tubes with colored caps in a laboratory setting. 3d animation - 試管 個影片檔及 b 捲影像00:10醫學樣本, 血漿
oil liquid flowing in a spiral tube on yellow background. golden oil swirl with bubbles - 試管 個影片檔及 b 捲影像00:17黃色
research, healthcare and woman scientist checking medical sample in a laboratory for chemical experiment. lab, investigation and female health expert with liquid, drug or medicine vial inspection - 試管 個影片檔及 b 捲影像00:19白人
the patient's arm is being infused with saline and a catheter is inserted into the vein. - 試管 個影片檔及 b 捲影像00:07
lead (ii) chloride precipitate, formed as potassium chloride is dripped into lead (ii) nitrate solution - 試管 個影片檔及 b 捲影像01:11
ms tu female laboratory technician using micro-pipette at cancer research healthcare medicine industry dna sequencing laboratory / vancouver, bc, canada - 試管 個影片檔及 b 捲影像00:09
close up and super slow movement of light golden water bubbling by pouring water inside a clear pipette placed diagonally on white background - 試管 個影片檔及 b 捲影像00:16
close up and super slow movement of clear water bubbling by sucking water inside two clear pipettes up and down on white background - 試管 個影片檔及 b 捲影像00:25
close up and slow motion of oil bubbles swirling and twisting around an underwater tornado in black and white - 試管 個影片檔及 b 捲影像00:39
1976 montage ms cu scientist removing test tube and showing it to camera / united states / audio - 試管 個影片檔及 b 捲影像00:08
close-up of a scientist using a pipette to transfer liquid into a test tube during laboratory research. scientific testing and chemical analysis in biotechnology, healthcare, and medical science. - 試管 個影片檔及 b 捲影像00:23
black female lab technician analyzing samples through a microscope in a hospital lab - 試管 個影片檔及 b 捲影像00:08
asian woman technician peers through a microscope in veterinary andrology lab, assessing bull semen slide for count, motility, and morphology to certify quality for artificial insemination programs. - 試管 個影片檔及 b 捲影像00:11動物實驗
innovative blood sample preparation using a centrifuge in a modern laboratory setting. 3d animation - 試管 個影片檔及 b 捲影像00:08醫學樣本
canisters of so-called miracle drugs derived from mold. a chemist does experiments with drugs in the test tube. - 試管 個影片檔及 b 捲影像00:54
close-up view of laboratory glasswares and tubes with different liquids for scientific research and experiments. modern laboratory with blurred background - 試管 個影片檔及 b 捲影像00:10
close up of scientist's hand using droplet fill chemical substance on petri dish in a laboratory - 試管 個影片檔及 b 捲影像00:19
research scientist from st bartholomew's medical school, who is working on a male contraceptive pill, works in a laboratory. she pours a mixture... - 試管 個影片檔及 b 捲影像00:12
close-up of the criminologists hands in protective gloves, opening and closing a test tube with a cotton swab at the crime scene - 試管 個影片檔及 b 捲影像00:29犯罪現場