FIG. 1 is a top and front perspective view of the tissue culture flask;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a back elevational view thereof; and

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is an exploded view thereof.