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Related Concept Videos

The Mammary Glands01:12

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The female breast is a hemispheric projection of variable size positioned anterior to the pectoralis major and serratus anterior muscles. A fascia layer composed of dense, irregular connective tissue connects it to these muscles.
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In multicellular organisms, many molecules transmit signals between cells to pass information. These signals vary in complexity and include small peptides, nucleotides, steroids, fatty acid derivatives, and dissolved gases such as nitric oxide. Some signaling molecules diffuse through the plasma membrane to act locally between neighboring cells or travel long distances. Others remain attached to the cell surface, transmitting information to other cells only when they make contact. In some...
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The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
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Indirect Immunofluorescence on Frozen Sections of Mouse Mammary Gland
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The Mammary Gland: Basic Structure and Molecular Signaling during Development.

Swarajit Kumar Biswas1, Saswati Banerjee2, Ginger Wendolyn Baker3

  • 1CSI Laboratories, Inc., Alpharetta, GA 30004, USA.

International Journal of Molecular Sciences
|April 12, 2022
PubMed
Summary
This summary is machine-generated.

Mammary gland development, crucial for mammalian reproduction, involves distinct stages from embryogenesis through lactation. Understanding the molecular regulators driving these hormonal-dependent changes is key.

Keywords:
developmentmammary glandsignaling

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Area of Science:

  • Developmental Biology
  • Mammalian Reproduction
  • Endocrinology

Background:

  • The mammary gland, a defining mammalian trait, originates from skin glands and functions in offspring nutrition via milk production.
  • Its development progresses from embryonic rudimentary structures to complex, branched, milk-producing organs.
  • This development is essential for postnatal survival and reproductive success.

Purpose of the Study:

  • To elucidate the molecular mechanisms governing mammary gland development across different life stages.
  • To highlight the hormonal influences on mammary gland morphogenesis and differentiation.
  • To provide a comprehensive overview of current knowledge on mammary gland development regulators.

Main Methods:

  • Review of existing literature on mammary gland development.
  • Analysis of key molecular and hormonal factors involved.
  • Integration of findings across embryonic, pubertal, pregnant, and lactating stages.

Main Results:

  • Mammary gland development involves distinct, sequential stages: embryonic formation, pubertal branching, pregnancy-induced differentiation, and lactation.
  • Early development is largely hormone-independent, while later stages (puberty, pregnancy) are critically hormone-dependent.
  • Specific molecular regulators orchestrate these developmental transitions.

Conclusions:

  • Mammary gland development is a complex, multi-stage process regulated by specific molecular factors and hormonal cues.
  • Understanding these regulators is crucial for insights into mammalian reproduction and potential therapeutic targets.
  • Further research into these molecular pathways will enhance our knowledge of gland biology.