2605
These IgG antibodies in the babies diminished rapidly after delivery , and were detectable only in 3 cases at 2 , 3 , and 5 months of ages out of 38 babies up to 21 months .
 GENE: IgG antibodies
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: IgG antibodies 
Answer:
 GENE: IgG antibodies