- ZIFT is related to embryo transfer in the test-tube programme. In this technique, the zygote or embryo up to 8 blastomeres is transferred into the fallopian tube.
- IUT is the technique in which the semen of the husband or a healthy donor is introduced into the uterus of a female.
3.GIFT is the technique in which the ovum collected from the donor female is transferred into the fallopian tube of another female, who cannot produce an ovum but can provide suitable conditions for fertilization and pregnancy.