30s
analysis
analyzing
attentively
biochemist
biochemistry
biology
biotechnology
caucasian
chemist
chemistry
concentrated
concentrating
concentration
equipment
examine
examining
experiment
expertise
focused
gloves
health
healthcare
healthcare and medicine
indoors
lab
lab coat
laboratory
looking
male
man
medical
medical research
medical sample
medicine
microscope
mid adult
practitioner
profession
research
researcher
researching
sample
science
scientific
scientific experiment
scientist
scrutiny
serious
specialist
study
studying
technician
technology
thoughtful
working