Overview
ART (Assisted Reproductive Technologies) help infertile couples conceive. The techniques differ in WHERE fertilization occurs and WHERE material is transferred.
Key Distinctions Table
| Technique | Fertilization Site | Transfer Site | Cargo Transferred |
|---|---|---|---|
| IVF-ET | In vitro (lab) | Uterus | Embryo (8-cell/blastocyst) |
| ZIFT | In vitro (lab) | Fallopian tube | Zygote (up to 8-cell) |
| GIFT | In vivo (fallopian tube) | Fallopian tube | Gametes (egg + sperm) |
| ICSI | In vitro (oocyte) | Uterus (after fertilization) | One sperm into oocyte |
| AI/IUI | In vivo (fallopian tube) | Uterus/cervix | Processed semen |
NEET Memory Tip
"Z and G go to Fallopian tubes (Z = fertilized zygote, G = unfertilized gametes). IVF baby goes to Uterus."