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  1. May 2019
    1. d. 3 μl of sample prepared in low stringency buffer was added to the spot activated with low stringency buffer and incubated in humid chamber for 30 min. and removed using whatman strips. (same protocol was repeated for the samples prepared in high stringency buffer on spots activated with high stringency buffer). e. Stringent washings were given to each spot with 5 μl of low stringency buffer/ high stringency buffer/ buffer of pH 3.0/ pH 5.0/ pH7.0 for 30 sec and removed using Whatman filter paper strips. f. 1-2 μl of SAP matrix was added to each spot and allowed to dry. g. The chip was then placed in the SELDI machine
    2. One set of cell extracts was prepared in low stringency buffer by mixing cell extracts and low stringency buffet in 1:1 ratio and another in high stringency buffer. b. 10 μl of low stringency/high stringency buffer was added to the spots on the chip and incubated in a humid chamber for 5 min. c. Buffer was removed using Whatman strips without touching the spot surface. This step was repeated once