Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Jun 23;5(2):29. doi: 10.3390/biomimetics5020029

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Isolated spicules from Tethya aurantia. (A) Optical micrographs of isolated spicules measuring 30 μm in diameter and 2 mm in length and (B) its higher magnification image showing axial filaments running through the center of the T. aurantia spicules (arrow). (C) Scanning electron micrographs of a cross-section, showing the concentric circular siliceous deposits after removal of the preexisting axial filaments. Scale bars: (A,B) 50 μm, (C) 1 μm. Adapted from [93] with permission from John Wiley and Sons.