Tag: B cells

  • The molecular mayhem of immunogens, haptens, carriers and adjuvants

    The molecular mayhem of immunogens, haptens, carriers and adjuvants

    First up, the immunogen: the molecular maestro of the immune system, orchestrating a symphony of B-cells and T-cells like a conductor with a grudge. These substances don’t just knock politely on the immune system’s door—they kick it down with the force of a battering ram. Immunogens are a subset of antigens (because “antibody-generating” wasn’t obvious enough)…

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  • Cells in the APUD system may include melanocytes

    Cells in the APUD system may include melanocytes

    Melanocytes are melanin-producing neural crest-derived cells located in the bottom layer (the stratum basale) of the skin’s epidermis, the middle layer of the eye (the uvea), the inner ear, vaginal epithelium, meninges, bones, and heart. Melanin is a dark pigment primarily responsible for skin color. Once synthesized, melanin is contained in special organelles called melanosomes which can be transported to nearby keratinocytes to induce pigmentation. Thus darker skin tones have more melanosomes present than lighter skin tones. Functionally, melanin serves as protection…

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