OBSERVING NUCLEUS IN CHEEK CELLS:::
☆use the glass slide carefully
☆use a dropper to stain the sample.
☆pull your sleeves and hair up,so that it doesnt obsturct ur view.
☆dont eat or drink anything in the laboratory.
☆keep ur work area clean and tidy.
☆if anything is broken ir cut,use first aid immediately.
HOPE THIS HELPED!!