All the following are the micro-manipulative methods in Assisted reproductive technique EXCEPT-
**Question:** All the following are the micro-manipulative methods in Assisted reproductive technique EXCEPT-
A. Intracytoplasmic sperm injection (ICSI)
B. Intracytoplasmic sperm injection (ICSI)
C. Intracytoplasmic sperm injection (ICSI)
D. Intracytoplasmic sperm injection (ICSI)
**Correct Answer:** D. Intracytoplasmic sperm injection (ICSI) is a micro-manipulative method in assisted reproductive technique, which involves injecting a single sperm directly into the cytoplasm of an oocyte.
**Core Concept:**
Assisted reproductive techniques (ARTs) are methods used to help couples with fertility issues conceive. Micro-manipulative methods involve direct manipulation of gametes or embryos at a microscopic level, using specialized tools and techniques.
**Why the Correct Answer is Right:**
Intracytoplasmic sperm injection (ICSI) is a specific micro-manipulative method in ART that is designed for cases with severe male factor infertility, where only a single sperm can be retrieved for injection into the oocyte. In ICSI, a single sperm is directly injected into the cytoplasm of an oocyte (egg), increasing the chances of successful fertilization and embryonic development.
**Why Each Wrong Option is Incorrect:**
A. Intracytoplasmic sperm injection (ICSI) is a correct micro-manipulative method in ART and is not related to the question.
B. The repetition of ICSI is not relevant, as the question asks for an exception rather than a repeated method.
C. Intracytoplasmic sperm injection (ICSI) is also a correct micro-manipulative method in ART, making this option incorrect as well.
D. Intracytoplasmic sperm injection (ICSI) is a correct micro-manipulative method in ART, and this option repeats the question's method, making it irrelevant.
**Clinical Pearl:**
ICSI is a valuable tool in ART clinics, particularly for patients with severe male factor infertility, as it increases the chances of successful fertilization and embryo development. It is an essential part of modern infertility treatments and should not be overlooked as an option.