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Your student is trying to create a "Gene X" knockout mouse by introducing a recombinant construct into embryonic stem (ES)cells, selecting transformants, and introducing the transformed cells into mouse blastocysts. He designed his construct as follows:
NeoR----region of homology to Gene X---HSV tk--- region of homology to Gene X
where NeoR is the neomycin-resistance gene and HSV tk is the Herpes Simplex virus thymidine kinase gene. He transforms the ES cells and exposes them to G418 and ganciclovir. Explain to your student he failed to recover transformed ES cells.
Symbolic Factor
An element that represents or signifies something beyond its literal meaning, often carrying emotional or cultural significance.
Social Responsibility
The concept that businesses should contribute to the welfare of society and operate in a manner that is ethical, legal, and sustainable, beyond just seeking profits.
Prestige
The respect, admiration, or distinction accorded to a person or organization, based on success or quality.
Innovation
The act or process of introducing new ideas, devices, or methods, aiming to enhance processes, products, or services.
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