TS5: | TS5: embryo [23] (blastocyst) | | TS5: inner cell mass [24] | TS5: extraembryonic component [25] | | TS5: cavities and their linings [26] | | | TS5: blastocoelic cavity [27] (blastocelic cavity) | | TS5: trophectoderm [28] | | | TS5: mural trophectoderm [29] | | | TS5: polar trophectoderm [30]