Fig. 2
From: Heterotrophic components of biofilms on wood artefacts
a–c Tilia wood of the Artefact 1, a tangential section showing rays (r) two- to four-seriate, a vessel (v), thin walled ground tissue (gt) and biodeteriogens (b). b Wood surface showing two vessels (v), two rays (r) and ground tissue (gt); biodeteriogens (b) and eroded area (e) are present on vessel surface. c Detail of b showing biodeteriogens (b) on inner surface of a vessel. d Populus wood of the Artefact 2 Tangential section showing a vessel with intervessel pits (ip), ground tissue (gt) and uniseriate rays (ur). e Populus wood of the Artefact 4. Radial wood surface showing ray cells (rc) and large ray-vessel pits (rvp). f Pyrus wood of the Artefact 3 Wood surface showing vessels (v) and fibre tracheids (ft) (a, d light microscopy; b, c, e, f scanning electron microscopy)