Mesohyl

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The mesohyl, formerly known as mesenchyme, is a gelatinous matrix within a sponge. The mesohyl resembles a type of connective tissue and contains several amoeboid cells, fibrils, and skeletal elements. For hundred of years, it has been largely accepted that sponges lack true tissue, but it is currently debated as to whether mesohyl and pinacoderm layers are in fact tissues.

Lytle, Charles F., and John R Meyer. General Zoology Laboratory Guide, Fourteenth Edition. New York: McGraw-Hill, 2005.Catagory:Porifera