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Complement System 9/18 - Immunology - USMLE Step 1

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  • thank u thank u thank u thank u thank u thank u thank u ....i can't say it enough times!!! from england

  • Thank you so much!!!!!! You've saved me so much time and tears!!!! lol

    Cant believe i finally get it!!!!

  • i am only halfway through the lecture and i think i already learned so much. thank you, sir. - from philippines

  • you are amazing,sir!!

    Wish you taught me immuno in med skl :(

  • C3 convertase in classical pathways is C4b2b?? It thought it is C4b2a??

  • thanks a lot , i study in Taiwan

  • I realy got alots of info. from you

    thak you very very much Dr. Najeeb

    I am post graduate Student in uni of Aberdeen

  • What about Factor B and D in Alternative pathway and MBP-SP-1 and 2 in Lectin pathway?

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