Fig. 2
From: Analyzing ancient Chinese handmade Lajian paper exhibiting an orange-red color
Cross-sectional photomicrographs of the Lajian paper under ×50 magnification. a Images under white light; b thin varnish layer (A), orange-red layer (B), yellow-orange layer (C), white layer (D), and light yellow-orange layer (E) by fluorescence under UV illumination
