Table 4. The number and percentage of beta-cells with insulin expression compared with other cells in the islets of Langerhans (n = 3) .

Code	Treatment	The number insulin of expression	The percentage of insulin expression (%)
A	Normal rats	79.40 ± 2.55*	78.06 ± 3.09*
B	Normal rats receiving AND suspension	74.98 ± 8.41*	74.98 ± 1.73*
C	Diabetic rats receiving ASNE	47.70 ± 5.52*	60.43 ± 2.56*
D	Diabetic rats receiving AND suspension	41.50 ± 6.36*	39.05 ± 1.02*
E	Diabetic rats as the negative control	14.70 ± 4.95	15.52 ± 5.77

^*Significantly different from the negative control (P  < 0.05).

Abbreviations: AND, andrographolide; ASNE, andrographolide in self-nanoemulsifying.