oocytes are preserved through a cryopreservation process in a lab environment

blue water circle reflection flower ice freezing drop petal azure frost purple glass leaf wave organ light cryopreservation oocytes biology laboratory science cells preservation biotechnology research fertility reproductive health crystals freezing cellular structures metabolism genetic material medical technology biophysics techniques procedures liquid nitrogen thawing egg laboratory equipment cryoprotectants samples viability experimentation lab analysis healthcare innovative assisted reproduction advanced methods cryobiology storage scientific exploration embryo safety