title: Preparation of epidermal peels from leaves of gymnosperms by treatment with hot, 60 per cent HNO 3.
mesh_terms: D000143:Acids; D006652:Histological Techniques; D008722:Methods; D009566:Nitrates; D059828:Plant Cells; D013696:Temperature; D014197:Trees / Q000166:cytology
chemical_list: D000143:Acids; D009566:Nitrates