“…The cells have been variably called as ensheathing pericytes Grant et al, 2019), transition/transitional pericytes (Kisler et al, 2017a;Arango-Lievano et al, 2018), pre-capillary pericytes (Zimmermann, 1923), simply 'pericytes' or 'capillary pericytes' (Hall et al, 2014;Attwell et al, 2016;Cai et al, 2018;Khennouf et al, 2018;Grubb et al, 2020), smooth muscle-pericyte hybrids (Hartmann et al, 2015;Yang et al, 2017;Dalkara, 2019), arteriole SMC (aaSMC) (Vanlandewijck et al, 2018), or pre-capillary SMCs (Hill et al, 2015). At the same time, the vessels of proximal branches coming off penetrating arterioles are also differently defined as pre-capillary arterioles (Fernández-Klett et al, 2010;Hartmann et al, 2015;Hill et al, 2015;Berthiaume et al, 2018;Erdener and Dalkara, 2019;Grant et al, 2019), post-arteriole capillaries (Gould et al, 2016) or a part of capillaries (Hall et al, 2014;Attwell et al, 2016;Cai et al, 2018;Khennouf et al, 2018;Grubb et al, 2020).…”