UC Davis researcher Dr. George Thompson advises cancer patients and others with weakened immune systems to avoid vaping or smoking marijuana. Jose Luis Villegas The Sacramento Bee
UC Davis researcher Dr. George Thompson advises cancer patients and others with weakened immune systems to avoid vaping or smoking marijuana. Jose Luis Villegas The Sacramento Bee

Health & Medicine

February 07, 2017 9:33 PM

Is your medical marijuana safe? UC Davis doctors say dangerous bacteria, fungi can lurk in pot

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