Immune System
Which of the following(s) is/are the determinants of antigenicity?

Foreignness
All of these
Chemical nature
Size of the antigen

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Immune System
Polymorphonuclear leukocytes (or PMNs)

All of these
can be attracted to the site of an infection following activation of complement
are a type of phagocyte that can engulf and kill bacteria
are derived from bone marrow stem cells

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