The main pass from the seed through the linter machine ends in 1st Lower cotton linters; the subsequent pass creates 2nd Slash cotton linters. Cotton is genetically modified for resistance to glyphosate a wide-spectrum herbicide identified by Monsanto which also sells some of the Bt cotton seeds to farmers. https://cottonlintersmeaninginmar87231.tribunablog.com/everything-about-cotton-linters-from-thakurjisolvex-50518716