preparing microscope glass slides with methylene blue in the lab

art design wood iron brand writing lighting blue furniture hand table glasses gadget glass drink machine green white toy making microscope slides methylene tray plastic pipette pippette ear bud swabs tweezers metal blur stain bottle methyl science biology school lesson blanks measuring tissue room research lab workshop creating instruments equipment collection chemistry chemists cheek cells tests microscopy testing kit medical medicine boxed laid layed out displayed physics ready prepared preparing set chemicals classroom worktops surface bench desks