)

Signal Intensity

800

 900

 

1000

 1100

 1200

 1300

 1400

 1500

Mass/charge

5' AAA AA 3'

*

*

*

*

*

b) 20 cycles

*

*

*

*

*

c) 70 cycles

a) 0

 

cycles

[M-H]

-1

Figure 1