A group of researchers analyzed a sample of cannabis sold on the streets of the Spanish capital
The experts highlight the high amount of fecal traces found in the analyzed material.
Traces of the E. Coli bacterium and Aspergillus fungus were found by analysts who examined 90 samples of the cannabis sold on the streets of Madrid, BBC explains.
The samples wrapped in plastic "acorns" were analyzed by experts from the Universidad Complutense de Madrid in a research project led by José Manuel Pérez.
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