Laboratory worker injecting white rat, using syringe, close-up
Laboratory worker injecting white rat, using syringe
Laboratory worker holding white rat
Laboratory worker lifting white rat from cage
White rat in cage, laboratory workers peering into cage
Laboratory worker holding white rat, smiling
Laboratory workers looking into cage containing white rats, low angle view
Laboratory worker injecting white rat using syringe
Laboratory worker examining white rat
Laboratory worker feeding white rat in cage
White rat in cage, laboratory worker in background
Laboratory worker reaching into cage containing white rat
Laboratory worker looking into cage containing white rat
Laboratory worker holding digital tablet, looking into cage containing white rat
Laboratory worker, holding digital tablet, looking into cage containing white rats
Laboratory worker doing experiment in lab, close-up
Laboratory worker using pipette, dripping liquid into petri dish, close-up
Laboratory worker choosing measuring tube
Laboratory worker using digital tablet
Laboratory worker writing details on test tube
Laboratory worker doing experiment in lab
Laboratory worker choosing pipette, close-up
Laboratory worker writing details on test tube, rear view
Laboratory worker examining two petri dishes side by side
Laboratory workers looking at molecular model
Laboratory worker placing liquid filled test tube in rack. close-up
Laboratory worker examining contents of petri dish
Laboratory worker holding test tube rack, close-up
Laboratory worker taking liquid from test tube, using pipette, close-up
Laboratory worker using digital tablet, mid section
Two laboratory workers looking at computer screen
DNA Research, Scientist comparing DNA results on a computer screen in the laboratory
Laboratory worker placing liquid filled test tube into rack, elevated view
Portrait of female laboratory worker, arms folded, smiling
Laboratory worker holding glass beaker, containing yellow liquid
Laboratory worker holding liquid filled test tube
Lunar material testing, 1969
Laboratory worker examining liquid filled test tube, close-up
Portrait of four laboratory workers in lab
Closeup of female scientist wearing blue gloves holding rat with male colleague while working in a laboratory for experiment
Closeup of young female scientist hand holding and using syringe on laboratory rat
Laboratory worker looking at laboratory equipment
Laboratory workers looking at computer screen
Lab tech holding rat from vat
Laboratory worker using pipette to take liquid from test tube
Rat metabolism research
Lunar animal research
Animal testing
Closeup of two female scientist are holding a lab rat for observation and experimentation in laboratory
Scientist preparing DNA samples for testing in the laboratory
Laboratory worker holding test tube rack
DNA Research, Scientist holding up a DNA sample with results on the computer screen
Laboratory worker using pipette, dripping liquid into petri dish
Bacteriology research, 1910s
Scientist experimenting with a chemical formula in the laboratory
Laboratory worker examining liquid in test tube
Scientists working in laboratory, sample in glass bottle
Laboratory worker taking test tube from rack
Scientists working in laboratory, man looking through microscope and woman taking notes
Scientists working in laboratory, woman with microscope and man taking notes
Scientist viewing a DNA gel during an experiment in the laboratory
White laboratory rat
Laboratory worker holding liquid filled test tube, close-up
Portrait of confident scientist using microscope in laboratory
US psychologists with laboratory rat and pet cat
Laboratory worker holding liquid filled test tube, using digital tablet
Technician holding white rat, Close Up
Scientist using laboratory equipment
Pharmaceutical Research, doctor preparing a syringe for a medical trial
DNA Research, Scientist holding up a multi well plate containing DNA samples with results on the computer screen
DNA Research, Scientist holding up a tray of DNA samples with results on the computer screen
Biotechnology Research, Scientist viewing specimens in a multi well plate during an experiment in the laboratory
Biotechnology Research, Scientist viewing specimens in a vial during an experiment in the laboratory
DNA Research, Scientist viewing DNA test results on a computer screen in the laboratory with a tray of samples in the fore ground
Scientist preparing blood samples in a multi well plate for clinical testing in a laboratory
Scientist checking blood sample information ready for clinical testing in a laboratory
Laboratory worker examining test tube
Female scientist holding paperwork in laser laboratory
Laboratory worker examining liquid filled test tube
Severe Combined Immunodeficiency mouse
Gene therapy research on mice
Laboratory worker using long pipette, dropping liquid into petri dish
Scientists working in laboratory
Happy scientist in laboratory
Portrait of scientist in laboratory looking at camera
Scientists reading test results in laboratory
Two female researchers holding a lab rat for experimentation
Scientists examining sample inside petri dish in laboratory
Lab technician inspecting beaker of yellow biofuel in biofuel plant laboratory
Lab technician looking at beaker of yellow biofuel in biofuel plant laboratory
Lab technician looking at beaker of red biofuel in biofuel plant laboratory
Male scientist in laboratory
Scientist using microscope in laboratory
Pharmaceutical Research, doctor preparing a medicine phial for a medical trial
Oriental rat flea, SEM
Female scientist holding container in laser laboratory
A rat
Scientist pipetting medical samples into microplate in laboratory
Female scientist examining cell cultures growing in a culture jar by using a inverted microscope in the laboratory
Scientist preparing chemical formula in a laboratory flask during an experiment, molecular model in the background
Scientist preparing chemical experiment in laboratory
Scientist injecting sample in microtiter plate at laboratory
Scientist preparing a DNA swab for analysis in a laboratory for forensic or paternity testing
Laboratory worker using long pipette to transfer liquid to petri dish
Portrait of lab technician in biofuel plant laboratory
Albino laboratory rat
Portrait of female scientist in laboratory
Scientist holding syringe at medical clinic
Female scientist pipetting sample into test tube
Technician working in laboratory
Hand of scientist wearing protective glove picking up vaccine vial in laboratory
Hand of scientist wearing protective glove picking up chemical compound vial in laboratory
Scientist viewing chemical experiment in laboratory
Funny scientist with cat skeleton in lab clinic
Funny crazy student doctor studying animal skeleton
American biomedical researchers, 1957
Student doctor studying animal skeleton
Funny crazy professor studying animal skeletons
The funny crazy professor studying animal skeletons. Funny crazy professor studying animal skeletons