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Related Concept Videos

Fertilization

Fertilization

During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...

Cleavage and Blastulation

Cleavage and Blastulation

After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.

Gastrulation

Gastrulation

Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata...

In Vitro Fertilization

In Vitro Fertilization

In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...

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Related Experiment Video

Updated: May 4, 2026

Single Cell Collection of Trophoblast Cells in Peri-implantation Stage Human Embryos

Single Cell Collection of Trophoblast Cells in Peri-implantation Stage Human Embryos

Published on: June 12, 2020

Reconstructing human implantation at the embryo-maternal interface.

Sarah Akhlaghi¹, Mo R Ebrahimkhani²

¹Division of Experimental Pathology, Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.

Developmental Cell

|March 3, 2026

Summary

This summary is machine-generated.

New in vitro models allow scientists to study human embryo implantation. These platforms enable research into early pregnancy development and potential treatments for implantation failure.

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Last Updated: May 4, 2026

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Published on: June 21, 2024

Area of Science:

Reproductive Biology
Developmental Biology
Cell Biology

Background:

Human embryo implantation is crucial for pregnancy but difficult to study mechanistically.
Understanding early embryonic development and maternal interactions is vital for reproductive health.

Purpose of the Study:

To introduce novel in vitro platforms for studying human embryo implantation.
To enable detailed investigation of embryo-endometrium interactions during implantation.
To provide models for exploring causes of implantation failure and testing therapies.

Main Methods:

Development of complementary in vitro systems recreating the human implantation niche.
Utilizing these platforms to observe and analyze key events in early human development.
Comparative analysis of different experimental setups for embryo-uterine interactions.

Main Results:

Successful reconstruction of key features of the human implantation microenvironment in vitro.
Demonstration of the platforms' utility in studying embryo-endometrium crosstalk.
Establishment of a foundation for future mechanistic studies of implantation.

Conclusions:

Novel in vitro models significantly advance the study of human embryo implantation.
These platforms offer promising translational avenues for reproductive medicine research.
Future studies can leverage these models to address infertility and improve pregnancy outcomes.