Summary
The lamellate cells of amphioxus have round nuclei, and cytoplasm with many mitochondria and a large amount of glycogen. Each of these cells projects a highly modified, branched cilium into the central canal, where it characteristically forms lamellar structures. Primary branches and secondary lamellae often contain accessory microtubules that are not derived from the axonema. The functional and evolutionary significance of this cell type is discussed in relation to the ciliary photoreceptors found in other chordates.
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This work is dedicated to Professor A. Carrato, Universidad Complutense, on the occasion of his 80th birthday
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Ruiz, S., Anadón, R. The fine structure of lamellate cells in the brain of amphioxus (Branchiostoma lanceolatum, Cephalochordata). Cell Tissue Res 263, 597–600 (1991). https://doi.org/10.1007/BF00327295
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DOI: https://doi.org/10.1007/BF00327295