Abstract
We examine the possibility that a large increase in the photon-hadron cross section at the Fermi scale (few hundred GeV in the c.m.) could account for the anomalous muon rate which seems to be associated with the radiation from Cygnus X-3. Such an explanation appears to be marginal but not perhaps entirely excluded. We point out that if this is indeed the case, then tests are possible with present colliding-ring machines.