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Hedgehog Signaling Pathway02:33

Hedgehog Signaling Pathway

The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
Exon Recombination02:32

Exon Recombination

The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes. 
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Testes: Histology01:27

Testes: Histology

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Related Experiment Video

Updated: Jun 19, 2026

Isolate Cell-Type-Specific RNAs from Snap-Frozen Heterogeneous Tissue Samples without Cell Sorting
08:30

Isolate Cell-Type-Specific RNAs from Snap-Frozen Heterogeneous Tissue Samples without Cell Sorting

Published on: December 8, 2021

LDHC: the ultimate testis-specific gene.

Erwin Goldberg1, Edward M Eddy, Chongwen Duan

  • 1Department of Biochemistry, Molecular Biology and Cell Biology, Northwestern University, Evanston, IL 60208, USA. erv@northwestern.edu

Journal of Andrology
|October 31, 2009
PubMed
Summary
This summary is machine-generated.

Lactate dehydrogenase C (LDHC) is essential for sperm function and fertilization. This review details the history and critical role of LDHC in male germ cells.

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Ex vivo Culture of Drosophila Pupal Testis and Single Male Germ-line Cysts: Dissection, Imaging, and Pharmacological Treatment
08:35

Ex vivo Culture of Drosophila Pupal Testis and Single Male Germ-line Cysts: Dissection, Imaging, and Pharmacological Treatment

Published on: September 11, 2014

Area of Science:

  • Biochemistry
  • Reproductive Biology
  • Genetics

Background:

  • Lactate dehydrogenase C (LDHC) was the first identified testis-specific isozyme in male germ cells.
  • Isozymes are ubiquitous in vertebrates, exhibiting developmental, tissue, and cell-specific regulation.

Purpose of the Study:

  • To review the historical discovery of LDHC.
  • To present evidence demonstrating LDHC's requirement for successful fertilization.

Main Methods:

  • Gel electrophoresis was used for initial detection in human spermatozoa and testes.
  • Immunohistochemistry localized LDHC in spermatocytes and sperm tails.

Main Results:

  • LDHC is localized in primary spermatocytes and increases after meiosis.
  • Final localization is in the principal piece of the sperm tail.

Conclusions:

  • LDHC is a multifunctional enzyme crucial for sperm function.
  • LDHC is indispensable for achieving fertilization.