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Royalty-Free Laboratory Photos, dominant color: black
1920x1271
man wearing laboratory gown and eyeglsses
Public Domain
3888x2592
bacteria, black, health, microbiology, infection, cell
Public Domain
3216x2136
pink tulip flower
Public Domain
4928x3280
low angle photograph of concrete structure
Public Domain
6000x3869
an alien in black suit jacket
Public Domain