A Cre knock-in mouse line on the Sickle tail locus induces recombination in the notochord and intervertebral disks.
Abe K, Araki K, Tanigawa M, Semba K, Ando T, Sato M, Sakai D, Hiyama A, Mochida J, Yamamura K. Genesis. 2012 Oct; 50(10):758-65. Epub 2012 May 14.