Fig. 2From: Direct analysis in real-time (DART) time-of-flight mass spectrometry (TOFMS) of wood reveals distinct chemical signatures of two species of AfzeliaIntervessel pits in tangential vessel walls of Afzelia bipindensis. Light microscopy showing alternate arrangement of minute pits (a) Scanning electron microscopy revealing vestures (white arrow) beneath pit membranes (black arrow) (b) Bars: 50 µm (a); 5 µm (b)Back to article page