Assertion: sponge's layer | /r/HasProperty | secreted by other amoebocytes
Facets:
Source sentences:
text: They are produced in the mesohyl as clumps of archeocytes, are surrounded with a hard layer secreted by other amoebocytes.
text: They are produced in the mesohyl as clumps of archeocytes, are surrounded with a hard layer secreted by other amoebocytes.