Figure 4From: Protocol: fine-tuning of a Chromatin Immunoprecipitation (ChIP) protocol in tomatoDNA fragmentation. Fresh chromatin samples were sonicated at 10, 15 or 20% power for 3, 4 or 5 pulses of 10 seconds each (waiting 5 seconds between pulses). NS: non-sonicated samples. M: "Quick load" 100-bp ladder (New England Biolabs, UK).Back to article page