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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
Capitate-sessile (A) and bulbous (B) glandular trichomes. In (A), also some non-glandular trichomes (not secerning) are visible. (C), schematic representation of the current model of secretion of cannabinoids from the trichomes.