* I forgot to mention about the highest yield point which is defect in cross linking in last step which occurs in Ehlers Danlos Syndrome, menkes disease,so please take a note of that.

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* If you are first or second year medical student or if you have more than one year to prepare for USMLE Step 1 or any other exam then I strongly recommend you to watch Dr. Najeeb lectures to make your concepts very clear. If you don't have enough time to prepare for USMLE Step 1 then I would not recommend you to go through all the videos of Dr. Najeeb, just watch Neurology and Immunology.