Médico afro-americano a trabalhar no laboratório de pesquisa. Assistente de ciências a fazer experiências farmacêuticas. Ferramentas de laboratório: microscópio, tubos de ensaio, equipamento. Química, medicina, bioquímica - Banco de fotos e imagens

African-american Medical doctor working in research lab. Science assistant making pharmaceutical experiments. Laboratory tools: microscope, test tubes, equipment. Chemistry, medicine, biochemistry

African-american scientist working in lab. Doctor making microbiology research. Laboratory tools: microscope, test tubes, equipment. Biotechnology, chemistry, bacteriology, virology, dna and health

African-american scientist working in lab. Male doctor making microbiology research. Laboratory tools: microscope, test tubes, equipment. Biotechnology, chemistry, bacteriology, virology, dna and

Conducting a test. Unsmiling skilled researcher wearing a uniform and doing a test

African-american Medical doctor working in research lab. Science assistant making pharmaceutical experiments. Laboratory tools: microscope, test tubes, equipment. Chemistry, medicine, biochemistry

Interesting work. Concentrated skilled researcher wearing a uniform and carrying out a test

African-american scientist working in lab. Male doctor making microbiology research. Laboratory tools: microscope, test tubes, equipment. Biotechnology, chemistry, bacteriology, virology, dna and

African-american scientist working in lab. Doctor making microbiology research. Laboratory tools: microscope, test tubes, equipment. Biotechnology, chemistry, bacteriology, virology, dna and health

Asian scientist working in lab. Doctor making microbiology research. Laboratory tools: microscope, test tubes, equipment. Biotechnology, chemistry, bacteriology, virology dna and health care concept

Archaeologist working in natural research lab. Laboratory assistant cleaning animal bones. Archaeology, zoology, paleontology and life science concept.

Scientist working in lab. Doctor making microbiology research. Laboratory tools: microscope, test tubes, equipment. Biotechnology, genetics, biochemistry, pharmaceutical, dna and health care concept.

Archaeologist working in natural research lab. Laboratory assistant cleaning animal bones. Archaeology, zoology, paleontology and life science concept.

Scientist working in lab. Doctor making microbiology research. Laboratory tools: microscope, test tubes, equipment. Biotechnology, genetics, biochemistry, pharmaceutical, dna and health care concept.

Scientist working in lab. Doctor making microbiology research. Laboratory tools: microscope, test tubes, equipment. Biotechnology, genetics, biochemistry, pharmaceutical, dna and health care concept.

Asian scientist working in lab. Doctor making microbiology research. Laboratory tools: microscope, test tubes, equipment. Biotechnology, chemistry, bacteriology, virology dna and health care concept

Asian medical doctor working in research lab. Science assistant making pharmaceutical experiments. Laboratory tools: microscope, test tubes, equipment. Chemistry, medicine, biochemistry, biotechnology