Related by context. Frequent words. (Click for all words.) 52 cryopreserved 50 frozen 49 unfertilized eggs 49 oocytes 48 cryopreservation 48 Colostrum 47 ovarian tissue 47 fertilized eggs 46 Artificial insemination 46 fertilized embryos 45 donor sperm 45 artificial insemination 45 cloned embryo 45 sperm 45 IVF embryos 45 inseminated 44 frozen semen 44 eggs 44 Giraffe gives 44 ovary 44 umbilical cord stem cells 44 defrosted 43 embryos 43 sperms 43 unused embryos 43 thawed 43 ovum 43 giant panda cub 43 IVF cycles 43 yellow legged frog 43 frozen embryo 43 somatic cells 42 Mei Xiang 42 spermatozoa 42 cloned cattle 42 cloned stem cells 42 gametes 42 Wheat gluten 42 embryo 42 vitrification 42 Philly zoo 42 panda cub 42 cryogenically frozen 42 blastocysts 42 pancreases 42 vertebrate species 41 Giant panda 41 captive pandas 41 Hua Mei 41 oocyte 41 egg 41 embryo transfers 41 ovarian stimulation 41 Infant formula 41 Umbilical cord blood 41 umbilical cords 41 transplanted tissue 41 Amur tiger 41 colostrum 40 coprolites 40 oviduct 40 panda 40 critically endangered species 40 Giant pandas 40 Embryos 40 pasteurisation 40 biobanks 40 neural tube defect 40 insemination 40 chicks hatched 40 GanedenBC# 40 powdered formula 40 blastocyst stage 39 pandas 39 cloned 39 refrozen 39 Sydney Taronga Zoo 39 Boisselier 39 cloned embryos 39 pancreatic islet cells 39 afterbirth 39 unexplained infertility 39 western lowland gorillas 39 gestational carrier 39 diseased cow 39 extract stem cells 39 IVF treatment 39 chicks hatch 39 gharials 39 nestlings 39 mammal 39 inseminate 39 leftover embryos 39 transplanted stem cells 39 myoblasts 39 unfrozen 39 female reproductive tract 39 Thawing 39 vitro fertilization IVF 39 panda cubs 39 IVF treatments