| $ZIFT$ Method | $GIFT$ Method |
|---|---|
| $(1)$ Full name is Zygote Intra Fallopian Transfer. | $(1)$ Full name is Gamete Intra Fallopian Transfer. |
| $(2)$ Fertilization occurs outside the body (in vitro) in a laboratory. | $(2)$ Fertilization occurs inside the fallopian tube (in vivo). |
| $(3)$ The zygote or early embryo (up to $8$ blastomeres) is transferred into the fallopian tube. | $(3)$ The ovum and sperm are collected and transferred directly into the fallopian tube. |
| $(4)$ It is suitable for women who cannot produce ova but can provide a suitable environment for fertilization and development. | $(4)$ It is suitable for women who cannot produce ova but can provide a suitable environment for fertilization and further development. |
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