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. 2012 Jan 28;348(2):281–294. doi: 10.1007/s00441-011-1314-3

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© The Author(s) 2012

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Fig. 8 — Immunoblot specificity of plakophilin-2 (Pkp2) on polypeptides of total protein lysates of murine and human fibroblastoidal cells. Immunoblot reaction of murine mAbs specific for Pkp2 on SDS-PAGE-separated polypeptides presents in lysates of permanently growing human keratinocytes of line HaCaT (lane 1), murine fibroblasts of lines L929 (lane 2) and 3T3 (lane 3), SV40-virus transformed (line WI38VA13; lane 4) and non-transformed (lane 5) human diploid lung fibroblasts of line WI38 and SV40-virus transformed human fibroblasts of line SV80 (lane 6). Note that the Pkp2-specific polypeptide band of ca. 97 kDa appears not only in lysates of HaCaT keratinocytes and transformed fibroblasts (WI38VA13 and SV80) but also in the “junction-lacking” L929 fibroblasts. Positions of polypeptide molecular weights are indicated on the left and correspond to 158, 116, 97, 66 and 55 kDa (from top to bottom)