This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Lines of Blasehko are related to - 
Select and explain. 
A. Keratinocytes, B. Blood vessels, C. Nerves, D. Bones
A: Keratinocytes
Answer: A: Keratinocytes 
Explanation: Ans-A Keratinocytes o Blaschko's lines correspond to the pathways followed by keratinocytes migrating from the neural crest during embryogenesis.o The lines follow a V-shape over the spine, an S-shape on the abdomen, inverted U-shape from the breast area to the upper arm and perpendicular down the front and back of the lower extremities.