1590
The authors recommend in cases with an elevated transaminase serum activity more frequent check - up examinations to avoid missing of a relapse , and to examine repeatedly IgM anti - HAV as in protracted forms of hepatitis IgM anti - HAV may persist even when the transaminase activity is normal .
 GENE: IgM; GENE: anti - HAV; GENE: IgM; GENE: anti - HAV
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: IgM; GENE: anti - HAV; GENE: IgM; GENE: anti - HAV