Ambiguity plays havoc
Pulse (heartbeat, acupuncture, beans, electric?)
Peptides (size distinction from proteins?)
Green Fluorescent Protein (what color is it?)
Polyphenols (code for dietary flavonoids?)
Nanotechnology (how many angstroms?)
Phytoestrogens (code for isoflavones?)
SERM (ER-alpha, ER-Beta?)
Phytotoxins (plants as source or target?)
Justaicin (flavonoid or terpenoid?)
Metabonomics (how differ from metabolism?)
Systems Biology (how differ from biology?)