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Col2a1Cre targeted the majority cells in the postnatal intervertebral discs. (a–c) Fluorescence images of mGFP (a), mTomato (b), and mGFP/mTomato (c) on intervertebral disc sections from 2 month-old Col2a1Cre; R26-mT/mG mice. (d–f) Higher magnification mGFP/ mTomato images for AF (d), endplate/growth plate (e), and NP (f). NP, nucleus pulposus; IAF, inner annulus fibrosus; OAF, outer annulus fibrosus; EP, endplate; GP, growth plate; VB, verterbral body
