When was allergy medicine invented searching

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Keyword	CPC	PCC	Volume	Length string	Score
when was allergy medicine invented	1.06	0.2	6783	34	18
when were allergies invented	1.41	0.5	8114	28	91
history of drug allergy	0.56	0.6	9584	23	69
when were allergies discovered	1.96	0.7	7432	30	36
the history of allergies	1.27	0.5	5881	24	9
when was the first medicine invented	0.22	0.2	4507	36	23
prior history of allergy	1.46	0.1	1595	24	21
when did allergies first appear	0.07	1	4971	31	16
what day was medicine invented	1.1	0.8	6963	30	20
when were food allergies discovered	0.55	0.7	5837	35	100
when were antihistamines invented	1.58	0.9	7438	33	81
when was food allergy testing developed	0.35	1	1616	39	54
history of food allergies	0.67	0.2	5930	25	52
the natural history of food allergy	1.51	1	8246	35	79
what was the first medication invented	1.03	0.5	3528	38	65
who invented the first medicine	1.52	0.9	6475	31	66
the history of asthma and allergy	1.66	1	9631	33	32
allergy history and physical	1.35	0.3	2035	28	13
who made the book allergic	1.93	0.3	3993	26	15

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