Where do hematopoietic stem cells exist

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1. Where do hematopoietic stem cells exist? Describe how to differentiate into lymphocytes (T or B)? into Macrophages?

2. What are the steps a microbe must take in order to become pathogenic?

3. What cells express MHC I? MHC? II what are their roles in the immune response?

Reference no: EM132489792

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