Table 2. Cry1C protein content of rice pollen grains before and after passage through the digestive system of Bombyx mori larvae.

Sample	Cry1C concentration (µg/g dry weight)	No. of pollen grains per mg	Cry1C content per grain (pg) (c x = a x/b x×103)	Lost rate of Cry1C protein (%) (R Cry = (c 1-c 2)/c 1×100)
Fresh pollen	3.62±0.10 (a 1)	43106.62±1140.13 (b 1)	0.084±0.002 (c 1)	27.40
Feces	0.08±0.03 (a 2)	1026.01±68.66 (b 2)	0.061±0.011 (c 2)

Insects were fed with mulberry leaves covered with T1C-19 rice pollen, and the feces were collected; n = 3.

Values are means ± SE in columns 2 and 4.