This light micrograph of a section through a teasel bud shows a complex pattern controlled by the same family of genes that controls the layout of animal and human bodies as well. Teasels are thistle-like wild flowers that have long been used in traditional herbal medicine. Teasel root tea was once used to stimulate the appetite, reduce fluid retention and help some liver complaints. Bruised roots were used in an ointment to treat warts, and teasels were even used to ward off witches.
B0006295 Section through a teasel bud. Wellcome Images available under the following creative commons usage http://creativecommons.org/licenses/by-nc-nd/2.0/uk/
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