3922
Patients were treated with either 4 . 8 million units of procaine penicillin with 1 g probenecid , 3 . 5 or 4 . 5 g of ampicillin with 1 g probenecid , or 9 . 5 g of tetracycline given over 4 days .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None