This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Congo-red with amyloid produces - 
Select and explain. 
A. Dark brown colour, B. Blue colour, C. Brilliant pink colour, D. Khaki colour
C: Brilliant pink colour
Answer: C: Brilliant pink colour 
Explanation: HARSH MOHAN TEXTBOOK OF PATHOLOGY SEVENTH EDITION Page no :67 By H&E staining amyloid appears as extracellular homogenous structureless eosinphilc material ; it stains positive with congo red staining and show apple gringe bitefringes on polarising microscopy