EOG8C5G01 GO:0042600 1/34 chorion cellular_component "A protective, noncellular membrane that surrounds the eggs of various animals including insects and fish." [GOC:jl, ISBN:0721662544] EOG8C5G01 GO:0007304 1/34 chorion-containing eggshell formation biological_process "The construction of a chorion-containing eggshell. An example of this is found in Drosophila melanogaster." [GOC:mah, GOC:mtg_sensu]