Table 1 Number of CCK-producing cells in the digestive tract of the Gobiidae

	Numbers of CCK-producing cells/ tissue section
	S. geneionema	C. gulosus	T. obscrus	R. giurinus
Esophagus	N.D.	N.D.	N.D.	N.D.
Stomach	·	N.D.	N.D.	N.D.
Anterior intestine	124±27a	175±5b	26±15	83±23a
Mid intestine	30±8b	38±26a	23±10	10±4b
Posterior intestine	8±1b	N.D.	N.D.	N.D.
Rectum	4±1b	N.D.	N.D.	N.D.

Values are mean ±S.E. in same column superscripted with different letters are significantly different (P<0.05). “ ·” indicates stomachless