Assertion: cimetidine | /r/CapableOf | act as immunomodulator
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text: This activity involves a number of different mechanisms of action: a) it acts against metastases via inhibition of tumor cell adhesivenes; b) histamine acts as a growth factor in various tumor cell types via the activation of H2 receptors; and cimetidine antagonizes this effect as an anti-histamine; c) Cimetidine acts as an immunomodulator by enhancing the host’s immune response to tumor cells, via inhibition on T-cell suppressor activity; d) acts as an antiangiogenic.