test tube

A doctor's hand holding a test tube
Test tube in hand
Laboratory worker looking at a test tube
Profession
Profession
A female scientist wearing protective mask and glasses and holding a test tube
Profession
Profession
Profession
Profession
Profession
Profession
One wrong move and whole building will blow up!
One wrong move and whole building will blow up!
Young scientist holding a test tube with something red in his hand
Laboratory worker holding a test-tube
People
People
Profession
Profession
Profession
Profession
People
People
People
Profession
Profession
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