Figure 2.

(A) Optical density map of 1536 individual oligonucleotides in 384 × 4 synthesis modules. The length of the oligonucleotides ranges from 19 to 24 nt. The average length is ∼21 nt. The average optical density and the standard deviation are indicated for each synthesis module. (B) A histogram of optical density of all the 1536 oligonucleotides shown in (A). The average optical density is 0.93 and the standard deviation is 0.19 for the 1536 oligonucleotides. The calculation was based on the measured values and no correction for oligonucleotide length and sequences was made.