<p>HS Northport stock (see&nbsp;https://www.nature.com/articles/ng1840) descended from&nbsp;eight inbred progenitor strains (A/J, AKR/J, BALBc/J, CBA/J, C3H/HeJ, C57BL/6J, DBA/2J and LP/J). For details, please see&nbsp;Demarest, K., Koyner, J., McCaughran, J. Jr., Cipp, L. &amp; Hitzemann, R. <cite>Further characterization and high-resolution mapping of quantitative trait loci for ethanol-induced locomotor activity</cite>. <i>Behav. Genet.</i> 31, 79&ndash;91 (2001).</p>