Tendon - longitudinal section (details)

This section is somewhat blurry, but we can still extract some useful information.

Notice the structure of the tissue (the wavy pattern) and the rows of purple dots, which—thanks to your growing histology knowledge—you might suspect are cell nuclei.

What type of cells would you expect to find here?

It’s not easy to discern the structure of individual nuclei in this section, but your guess is likely correct. These are fibrocyte nuclei. Take note of their elongated shape. The nuclei that appear more oval are likely cut in a different plane than the extremely thin, elongated ones.

In dense regular connective tissue, rows of fibrocytes are squeezed between the collagen bundles. We also see the characteristic wavy pattern of the collagen and how the fibers are arranged in parallel.