Abstract

The elemental composition of the morula cell of Halocynthia papillosa blood was studied by X-ray microanalysis with respect to the possible iron accumulation in this cell type. We found various amounts of Na, Mg, P, S, Cl, K, Ca, Fe and Br in the cytoplasm, nucleus and vacuoles. With the exception of a few cells, Ca, Fe and Br were not detected. Thus, the morula cells of the studied species are not iron-rich cells.

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