Immune system icon

Immune system

2.0.0 for Android

The description of Immune system

The immune system is a host defense system comprising many biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue. In many species, the immune system can be classified into subsystems, such as the innate immune system versus the adaptive immune system, or humoral immunity versus cell-mediated immunity. In humans, the blood–brain barrier, blood–cerebrospinal fluid barrier, and similar fluid–brain barriers separate the peripheral immune system from the neuroimmune system, which protects the brain.

Pathogens can rapidly evolve and adapt, and thereby avoid detection and neutralization by the immune system; however, multiple defense mechanisms have also evolved to recognize and neutralize pathogens. Even simple unicellular organisms such as bacteria possess a rudimentary immune system in the form of enzymes that protect against bacteriophage infections. Other basic immune mechanisms evolved in ancient eukaryotes and remain in their modern descendants, such as plants and invertebrates. These mechanisms include phagocytosis, antimicrobial peptides called defensins, and the complement system. Jawed vertebrates, including humans, have even more sophisticated defense mechanisms, including the ability to adapt over time to recognize specific pathogens more efficiently. Adaptive (or acquired) immunity creates immunological memory after an initial response to a specific pathogen, leading to an enhanced response to subsequent encounters with that same pathogen. This process of acquired immunity is the basis of vaccination.

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Immune system 2.0.0 Update

Previous versions
  • V2.0.0 16.0 MB APK

    Immune system


    Immune system 2.0.0 (2)

    Update on: 2018-05-02

    Requires Android: Android 4.0+ (Ice Cream Sandwich, API 14)

    Signature: c063f7c299c04865397682266d41772adb83f9bc Immune system 2.0.0(2) safe verified

    File SHA1: 395ab8b4dbd9844e2b006d5b2cf1c2d7900eb510

    File Size: 16.0 MB

    What's new:


  • V1.0.0 15.9 MB APK

    Immune system


    Immune system 1.0.0 (1)

    Update on: 2018-03-31

    Requires Android: Android 4.0+ (Ice Cream Sandwich, API 14)

    Signature: c063f7c299c04865397682266d41772adb83f9bc Immune system 1.0.0(1) safe verified

    File SHA1: fed1115d4b67212f97bfab005050ffdbe9a58193

    File Size: 15.9 MB

    What's new:


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