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Related Experiment Video

Updated: Jul 13, 2026

Analysis of Minerals Produced by hFOB 1.19 and Saos-2 Cells Using Transmission Electron Microscopy with Energy Dispersive X-ray Microanalysis

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Published on: June 24, 2018

Hemocyte-mediated shell mineralization in the eastern oyster.

Andrew S Mount¹, A P Wheeler, Rajesh P Paradkar

¹Department of Biological Sciences, Clemson University, Clemson, SC 29634, USA. mount@clemson.edu

Science (New York, N.Y.)

|April 10, 2004

Summary

Oyster hemocytes, a type of blood cell, contain calcium carbonate crystals and may directly contribute to shell formation. This finding challenges the traditional view of shell crystal initiation in mollusks.

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Published on: October 5, 2019

Area of Science:

Marine biology
Biomineralization
Cellular biology

Background:

Molluscan shell crystal growth is traditionally attributed to extracellular organic matrices.
The precise cellular mechanisms initiating biomineralization in oysters remain incompletely understood.

Purpose of the Study:

To investigate the potential role of oyster hemocytes in shell crystal production.
To challenge and expand the current understanding of molluscan shell biomineralization.

Main Methods:

Scanning electron microscopy (SEM) for cellular and crystal visualization.
X-ray microanalysis for elemental composition of hemocytes.
Vital fluorescent staining to track hemocytes during shell regeneration.
Experimentally induced shell regeneration in oysters.

Main Results:

A specific class of granulocytic hemocytes was identified containing calcium carbonate crystals.
The abundance of these crystal-containing hemocytes increased significantly after shell regeneration.
Hemocytes were observed at the mineralization front, releasing crystals for subsequent remodeling.

Conclusions:

Oyster granulocytic hemocytes are directly involved in shell crystal production.
These cells augment or initiate matrix-mediated crystal-forming processes.
This discovery offers new insights into the cellular mechanisms of biomineralization in mollusks.