MAPT and tauopathy: Aβ transmission in transgenic mice was first reported in 2000 114, mutant P301S tau transmission in transgenic mice in 2009 115 and from human tauopathies into transgenic mice in 2013 59; α‐synuclein transmission in transgenic mice using synthetic fibrils in 2012 116 and human MSA brain extracts in 2013 117, and TDP43 in transgenic mice using human brain‐derived FTLD‐TDP43 extracts in 2018 79.