spon·gin 
(spŭnjĭn)
(spŭnjĭn)n.
A sulfur-containing protein similar to collagen that forms the elastic fibrous structure of certain sponges.
| 单词 | spongin |
| 释义 | spon·gin (spŭnjĭn)n. A sulfur-containing protein similar to collagen that forms the elastic fibrous structure of certain sponges. |
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