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. 2020 May 18;123(3):378–391. doi: 10.1038/s41416-020-0891-x

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a Analysis of CDK4/6 expression in GCT tissues (type II GCTs, upper panel, Affymetrix microarray; type I GCTs, inlay in upper panel, qRT-PCR) and cell lines (middle panel: Illumina microarray; lower panel: RNA-seq data, RPKM = reads per kilobase million). As controls, normal testis tissue (NTT), the Sertoli cell line FS1 and fibroblasts (MPAF) were included. Standard deviation is given above bars. b Western blot analysis of CDK4, CDK6, RB1 and phospho-RB1 (pRB1) protein levels in GCT cell lines and controls (fibroblasts, Sertoli cells). HepG2 and HeLa cells served as positive controls for CDK4 and CDK6. GAPDH was used as housekeeper and for normalisation. c Immunohistochemical staining of CDK4 in GCT tissues (seminoma, EC, yolk-sac tumour and teratoma). Scale bar: 500 μm.