Table I. The identified protein group numbers of hypopharyngeal glands in three stages of both Italian bees (ITBs) and high royal jelly producing bees (RJBs).

Protein groups	NEBsa	NBsb	FBsc	Total
ITBs	1983	1257	1455	2097
RJBs	1814	1387	1421	2084
Total	2090	1501	1706	2375
Differentially expressed	47	200	338	—
Upregulated in ITBs	22	14	177	—
Upregulated in RJBs	25	186	161	—

^aNEBs, Newly emerged bees;

^bNBs, nurse bees;

^cFBs, forager bees.