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Alkaloids - caffeine, theobromine, theophylline
Structural chemical formulas of purine alkaloids (caffeine, theophylline, theobromine)
Strychnine fruit and leaves- nux vomica
The Areca catechu nuts.
Poppy flower deep of field
The Areca catechu nuts.
The Areca catechu nuts.
Poppies field
Berberine, a quaternary ammonium salt from the protoberberine gr
Datura Flower
A bee lands on a Borago officinalis, or borageflower.
Carbiol
English holly
Field of red poppies - Lest we forget
A close up of a blue Borago officinalis, of borage flower.
Root tip of Onion and Mitosis cell in the Root tip of Onion.
It blooms in the wild hemp agrimony & x28 Eupatorium cannabinum
New Trumpet
Datura Cornucopia
Datura Cornucopia
Tussilago farfara
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