Showing three papillae

Detail of the space between the papillae

Detail showing the tatse buds which are located on the sides of the papillae. The taste buds are the lighter onion-shaped bodies.

http://en.wikipedia.org/wiki/Taste_bud
One thing I've noticed about the histology slides is that the quality of the captured image can vary greatly due to the quality of the sections, possibly due to variations in the thickness of the sectioning -- less clutter on either side of the tissue section.