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# identifying [[Drüse/en|gland]]s which secrete thin secretions. | # identifying [[Drüse/en|gland]]s which secrete thin secretions. | ||
− | + | https://en.wikipedia.org/wiki/Serous_fluid <sub>([https://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License])</sub> | |
− | https:// | ||
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fuzzy term,