  There is evidence for existence of massless Dirac quasi-particles in
graphene, which satisfy Dirac equation in (1+2) dimensions near the so called
Dirac points which lie at the corners at the graphene's brilluoin zone. It is
shown that parity operator in (1+2) dimensions play an interesting role and can
be used for defining conserved chiral currents [there is no gamma^5 in (1+2)
dimensions]. It is shown that the "anomalous" current induced by an external
gauge field can be related to the anomalous divergence of an axial vector
current which arises due to quantum radiative corrections provided by
triangular loop Feynman diagrams in analogy with the corresponding axial
anomaly in (1+3) dimensions.
