Fig. 1From: The “chi-chi” of Ginkgo biloba L. grows downward with horizontally curving tracheids having compression-wood-like featuresThe chi-chi sample overview. a The G. biloba tree in Akiba shrine in 2023. b Chi-chi of G. biloba growing downward near the trunk (white arrow). c Sampled chi-chi. The tip part was cut off at the black arrow and used for research. Scale bar, 5 cmBack to article page