Assertion: alkaloid's nitrogen atom | /r/CapableOf | give affinity
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Source sentences:
text: Like many other alkaloids, the basic nitrogen atom in one of the six-membered ring structure of aconitine can easily form salts and ions, giving it affinity for both polar and lipophilic structures (such as cell membranes and receptors) and making it possible for the molecule to pass the blood-brain barrier.