Ectoplacental Cone Removal
Ectoplacental Cone Removal - Related Videos
08:26
Transcriptional Analysis by Nascent RNA FISH of In Vivo Trophoblast Giant Cells or In Vitro Short-term Cultures of Ectoplacental Cone Explants
0 Views •
Cited by 2 •
2016
Trophoblast giant cells (TGCs) play a key role in the placenta to ensure a healthy pregnancy. We present a protocol for assessing the transcriptional status of genes in TGCs by nascent fluorescent in situ hybridization on cryostat sections of post-implantation embryos or short-term cultures of embryonic day 7 ectoplacental cones.
14:35
Single-cell Suction Recordings from Mouse Cone Photoreceptors
0 Views •
Cited by 9 •
2010
We will show how to record flash responses from single mouse cones using a suction electrode.
09:14
Labeling F-actin Barbed Ends with Rhodamine-actin in Permeabilized Neuronal Growth Cones
0 Views •
Cited by 9 •
2011
A method to visualize and quantify F-actin barbed ends in neuronal growth cones is described. After culturing neurons on glass coverslips, cells are permeabilized with a saponin-containing solution. Then, a short incubation with the saponin buffer containing rhodamine-actin incorporates fluorescent actin onto free actin barbed ends.
03:18
In Vitro Assessment of Aggregated Amyloid-β on Neuronal Growth Cone Collapse
0 Views •
2025
This video demonstrates an in vitro assessment of neuronal growth cone collapse by amyloid-β (Aβ) aggregates. Treating the neurons with Aβ aggregates causes cytoskeletal destabilization, leading to the collapse of growth cones at the tip of the axons. The treated cells are compared with control cells to assess the extent of growth cone collapse.
16:29
Neuronal Cell Cultures from Aplysia for High-Resolution Imaging of Growth Cones
0 Views •
Cited by 18 •
2008
Aplysia californica neurons develop large growth cones in culture that are excellent for high-resolution imaging of growth cone motility and guidance. Here, we present a protocol for dissection and plating of Aplysia bag cell neurons as well as for setting up a chamber for live cell imaging.
FAQs
The key decision is locating the boundary between the ectoplacental cone and embryonic region under a stereomicroscope. Fine needles are then used to separate the tissues gently, rather than applying force that could damage adjacent structures. Accurate boundary identification and controlled excision make the resulting tissue-specific analysis more interpretable.
Preserving the embryo and surrounding structures matters because removal should isolate the ectoplacental component without altering the material that remains for comparison. This separation allows investigators to examine the cone and embryonic region independently, helping distinguish tissue-specific contributions and evaluate extraembryonic influences on embryonic patterning and cell differentiation.
Independent analysis can reveal whether observed developmental features are associated primarily with the ectoplacental cone or with the embryonic region. Comparing the separated tissues supports investigation of extraembryonic signals that may influence embryonic patterning and differentiation. This distinction is especially useful when studying interactions during implantation, gastrulation, and early placental development.
The procedure uses a stereomicroscope for visual identification and fine needles for microsurgical manipulation. Researchers locate the tissue boundary, position the needles carefully, and gently excise the ectoplacental cone while preserving the embryo and surrounding structures. The quality of the preparation depends on controlled handling that maintains the integrity of both separated tissue samples.
After separation, the ectoplacental cone and embryonic region can be cultured independently or examined with gene-expression and imaging methods. These approaches provide complementary information: culture supports analysis of tissue behavior outside the original arrangement, while gene-expression and imaging studies help characterize molecular or structural differences between the samples.
Ectoplacental Cone Removal is useful when researchers need to distinguish extraembryonic effects from events occurring within the embryo. Its applications include studies of implantation, gastrulation, and early placental development, as well as investigations of how extraembryonic signals influence embryonic patterning and cell differentiation. The method therefore connects tissue manipulation with analysis of early mammalian development.