From With One Trial Shelved And Another Failed, StemCells To Shut Down:

"Shut the Gate" by  Stefan Böhm Fotografie.
“Shut the Gate” by Stefan Böhm Fotografie.

“shut the Gate” by
Stefan Böhm Fotografie, via a Creative Commons license https://www.flickr.com/photos/dukehyper/15644797025/in/photolist-pQtF6K-ovM2o-aip6zY-mue41u-ys9Gx-9SMUbM-GSJ2jL-ooebhd-5xxbsQ-8vHeWe-BKS1jo-qyMdtP-8vLz1u-ovzRa6-8vLf9G-oTAKWV-pa8Wq2-ESM8bK-hhRyS7-o6uUns-pmnELR-f71MSK-mKK7qe-oTBufA-6BWmvs-pb5kao-nVv2se-ydc7yf-4nnhsX-3JkzDt-gDnf2-oTC8yv-3zrqPg-7hKRCt-oSUPhW-panHiy-pa8Ehk-oSV27e-adB26a-oSUGR9-pMQWEM-5nU1tF-oN3Khh-aNtAJ6-5nTXW8-8qnj6A-8vHLWx-8vLPiU-8vHxTa-8vHofp