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Noxious weed Musk thistle growing in a cultivated field
Pain Pathway. Nociception. Ascending pathway that connect the periphery with the brain during pain and temperature sensation. Hand, spinal cord and brain.
a lot of burnt cigarette butts with some ash
Rosette of young green leaves of Canadian thistle (also creeping or field thistle - Cirsium arvense) growing in tree bark mulch covered flower bed. Invasive weed in US. Close up on a sunny day
GHS Chemicals Label Pictograms and Hazard Classes - Carcinogenicity Respiratory sensitization

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