test tube hand drawn vector doodle illustration cartoon isolated white background simple |
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| navigate by keyword : testtube analyzing flask graphic pharmacology design mixture symbol container knowledge hand line study college glassware scientist background analysis biotechnology drawing experiment glass science isolated chemistry doodle liquid illustration medical research white biology test tube chemical laboratory medicine school vector lab equipment pharmacy scientific education icon learning outline drawn class sketch |
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| Test tube hand drawn vector doodle illustration. Cartoon test-tube. Isolated on white background. Hand drawn simple science element. |
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