analyzing
blackboard
board
caucasian
chemical
chemist
chemistry
class
college
development
discovery
draw
education
equipment
examination
examining
experiment
female
formula
lab
laboratory
learn
lecture
lecturing
medical
medicine
microbiology
molecular
molecule
observing
occupation
profession
professional
reseacher
research
school
science
scientist
serious
showing
structure
student
studying
teacher
teaching
university
white
woman
work
writing