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Related Concept Videos

Properties of Enantiomers and Optical Activity02:24

Properties of Enantiomers and Optical Activity

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It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
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Imaging Biological Samples with Optical Microscopy01:18

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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Stereoisomerism02:52

Stereoisomerism

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Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Related Experiment Video

Updated: Feb 1, 2026

Protein Transfection of Mouse Lung
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Optical Transfection.

Priti Kumar, Arvindhan Nagarajan, Pradeep D Uchil

    Cold Spring Harbor Protocols
    |December 5, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Optical transfection uses light to create temporary pores in cell membranes for gene delivery. This physical method offers a novel approach to introducing genetic material into mammalian cells.

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    Mouse in Utero Electroporation: Controlled Spatiotemporal Gene Transfection
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    Area of Science:

    • Cell Biology
    • Molecular Biology
    • Biotechnology

    Background:

    • Gene delivery into eukaryotic cells is crucial for research and therapeutics.
    • Current methods include biochemical, physical, and viral approaches.
    • Physical transfection methods offer alternatives to traditional techniques.

    Purpose of the Study:

    • To introduce optical transfection as a physical gene delivery method.
    • To highlight the mechanism of light-induced pore formation in cell membranes.

    Main Methods:

    • Describing optical transfection as a physical transfection technique.
    • Explaining the use of light to create transient pores in the plasma membrane.

    Main Results:

    • Optical transfection is a viable physical method for gene delivery.
    • Light exposure enables the formation of temporary pores for cellular entry.

    Conclusions:

    • Optical transfection represents an innovative physical strategy for gene delivery.
    • This method leverages light to facilitate genetic material transfer into mammalian cells.