  We present evidence for the combined production of VZ (V=W or Z) events in
final states containing charged leptons (electrons or muons) or neutrinos, and
heavy flavor jets, using data collected by the DO detector at the Fermilab
Tevatron Collider. The analyzed samples correspond to 7.5 to 8.4/fb of ppbar
collisions at sqrt s = 1.96 TeV. Assuming the ratio of the production cross
sections sigma(WZ) and sigma(ZZ) as predicted by the standard model, we measure
the total VZ cross section to be sigma(VZ) = 5.0 +- 1.0 (stat) +1.3 -1.2 (syst)
pb. This corresponds to a significance of 3.3 standard deviations above the
background only hypothesis. Furthermore, we have separately measured the cross
sections for the WZ and ZZ processes to be simga(WZ) = 5.9 +- 1.4 (stat) +- 0.7
(syst) pb and sigma(ZZ) = 0.45 +- 0.61 (stat) +- 1.2 (syst) pb, in agreement
with the standard model prediction.
