background
biochemical
briefcase
case
collage
collecting
collection
compilation
composite
crime
criminologist
danger
dangerous
detective
doctor
evidence
examination
experiment
expert
forensic
gathering
hazard
hazardous
investigating
investigation
investigator
isolated
lab
laboratory
man
mask
medicine
montage
poses
proof
radiation
radioactive
research
scientific
scientist
set
specialist
steel
toolbox
toolkit
toxic
variation
various
virus
white