This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'the staining technique seen above is used to stain ? \nSelect and explain. \nA. bone, B. collagen, C. skin tissue, D. cailage', 'role': 'user'}, {'content': 'Answer: B \nExplanation: MASSON&;S &;TRICHROME STAIN PRINCIPLE: Smaller dye molecule will penetrate and stain a tissue element but when ever the larger molecule can penetrate the same element the smaller molecule is replaced by it # THE THREE DYES (trichrome) Aniline Blue (stains collagen and mucus to blue or blue green) Beibrich Scarlet (stains cytoplasm, muscle and keratin to red) Weige&;s Iron Hematoxylin (stains nuclei blue to black) REF : ROBBINS 10TH ED', 'role': 'assistant'}]