because part of responders preactivated with an alloantigen acquired a capacity to adhere to the syngeneic sstc monolayer , it is supposed that a receptor to the syngeneic ia-molecule of sstc membrane arises on the surface of preactivated responder t cells , which results in direct interaction between these two cells , reflecting the `` '' interactional restriction '' '' mechanism of sstc function .
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surface of
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cells