OCR GCSE Biology A · J247
Specification B1.1a, PAG 1 · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Light microscopyA suitable liquid or stain is added, and a cover slip is lowered gently over the specimen.
- Revise: Microscope Techniques and Biological Drawings
A clear sheet placed over a specimen on a microscope slide to hold it flat for viewing.