A shot in the dark: Comparative morphology of the bioluminescent tube organs in tubeshoulders (Platytroctidae)
Fig 2
Generalized illustration showing internal postcleithral tube organ anatomy.
Abbreviations: scale (s, red), epithelium (ep, dark pink), dermis (d, blue), tube organ (t), pigment layer (pl, brown), modified scale (ms, red), luminescent fluid (lf, pink), muscle (m, red). Arrow indicates terminal tube opening, which is directed posteriorly.