SIRNA的种类 D) natural cis-acting RNA--na-ciRNA natural cis- antisense rnac(压力诱导 SiRNA); 3)repeat-associated short interfering RNAs (rasi-RNAS); 4 heterochromatin siRNA-hc sirnA; 5 scan rNa (scn RNa).siRNA的种类 1) natural cis-acting RNA—na-ciRNA; 2) natural cis-antisense RNA(压力诱导siRNA); 3) repeat-associated short interfering RNAs (rasi-RNAs); 4) heterochromatin siRNA—hc siRNA; 5 scan RNA (scn RNA)