adult
african ethnicity
analyzing
biochemistry
biology
biotechnology
caucasian ethnicity
chemical
chemist
chemistry
concentration
development
discovery
doctor
education
equipment
expertise
healthcare and medicine
holding
hospital
indoors
innovation
lab coat
laboratory
learning
liquid
looking
looking at camera
males
medicine
men
microbiology
microscope
occupation
one person
professional occupation
research
science
scientific experiment
scientist
sitting
student
studying
teamwork
technology
uniform
women
working
young adult