Immune System
Major Histo Compatibility Complex (MHC) is a collection of genes arrayed on

chromosome 6 in man, chromosome 17 in mice
chromosome 21 in man, chromosome 6 in mice
chromosome 6 in man, chromosone 21 in mice
chromosome 17in man, chromosome 6 in mice

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Immune System
Which of the following is correct for isoantigens?

They are antigens found in all members of a species
They are antigens found in all members of different species
They are antigens found in some members of a species
They are antigens found in some members of different species

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