are degraded collagen fibres. Proceedings of the Royal Society of London. Series B, Biological Sciences. 2007, 270 (1620): 1823–1829. doi:10.1098/rspb.2007
Echo. 2016-12-22 [2017-01-07]. (原始内容存档于2016-12-30). Episode nine of the series, entitled Berks to the Future, will be released on January 6. ... tank at