. 2014 Aug 4;9(8):e104192. doi: 10.1371/journal.pone.0104192

Table 4. Integral optical density of Calprotectin and TLR4 protein expression in jejunal mucosa.

Items	Treatments¹			SEM	P-value
	A group	B group	C group
Integral optical density of Calprotectin protein expression	389.68^a	327.54^b	338.65^b	17.49	0.0285
Integral optical density of TLR4 protein expression	250.51^a	202.30^b	212.94^b	12.52	0.0397
Number of observations	6	6	6

^{a, b}

Means with different superscripts in the same row differ (P<0.05).

A group means the control group, B group means the chlortetracycline group, C group means the COS group.