(1) The unfertilised egg cell began to divide to produce embryos that sometimes developed well.

(2) And creating ESCs from unfertilised eggs is also the first step to making a full living copy of an organism, or 'reproductive cloning'.

(3) In some cases, though, the unfertilised ovum itself is believed to be affected.

(4) The resulting sharp drop in its levels causes the lining of the womb, along with the unfertilised egg, to be shed.

(5) The genetic material of a cell from a cystic fibrosis patient, for example, can be transferred into an unfertilised egg cell with its own genetic material removed.

(6) ISCo has found a way of producing embryonic-like stem cells from unfertilised eggs.

(7) The egg is chemically stimulated to create a group of cells that form a non-viable (and unfertilised) "embryo".