From Wikipedia, the free encyclopedia. For the fungi genus, see Chalazion (fungus) . A chalazion (/kÉËleÉªziÉn/ ; plural chalazia /kÉËleÉªziÉ/), also known as a meibomian gland lipogranuloma, is a cyst in the eyelid that is caused by inflammation of a blocked meibomian gland, usually on the upper eyelid.Chalazia differ from styes (hordeola) in that they are subacute and usually painless nodules.rom Wikipedia, the free encyclopedia. For the fungi genus, see Chalazion (fungus) . A chalazion (/kÉËleÉªziÉn/ ; plural chalazia /kÉËleÉªziÉ/), also known as a meibomian gland lipogranuloma, is a cyst in the eyelid that is caused by inflammation of a blocked meibomian gland, usually on the upper eyelid.
The nucleus, chloroplast, and mitochondria have in common is that they are membrane-bound organelles in a cell.
-Mitochondria and chloroplast have own DNA that is circular and led scientists to believe that they were separate organisms at one point. -Sequence of that DNA is similar to bacteria. -They also have double membranes which shows evidence of being engulfed.