Extended Data Fig. 9: Aged mice characterization.
From: Tracking neural activity from the same cells during the entire adult life of mice

a, Representative photograph showing the aged mouse of weight gain (18 months) with tissue-like mesh electronics implant (left) compared with the mature adult mouse (5 months, right). b, Zoomed-in view of the regions highlighted by white boxes in (a). c, Zoomed -in views of the thinning hair (white arrows) of aged mouse and glossy brown fur of mature adult mouse highlighted by red and blue boxes in (b). d-e, Representative photograph showing the barbering around eyes (d, red arrow), grey and thinning fur in the dorsal back skin (e, yellow arrows) of the aged mouse (18 months) with mesh electronics implant. f, Statistical analysis reveals that significantly increased gray hairs in dorsal back skin in old-aged mice (p = 0.013, *P < 0.05, two-tailed t test, n = 3 independent mice. Data are presented as mean ± s.d.).