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Immunodeficiencies – Definition, Types, Animal models(Nude and SCID mice)

Immunodeficiencies - Definition, Types, Animal models(Nude and SCID mice)

What is Immunodeficiency? General Features Of Immunodeficiency Diseases Prior to beginning our examination of specific disorders, it is necessary to review some common characteristics of immunodeficiencies. Classification of Immunodeficiency Immunodeficiency diseases are categorised as A. Congenital or Primary Immunodeficiencies 1. B-Cell Immunodeficiencies (a) X-linked hypogammaglobulinemia, (b) selective immunoglobulin deficiencies, (c) hyperIgM syndrome, and (d) interleukin-12 … Read more

Animal Models for Autoimmune Diseases

Animal Models for Autoimmune Diseases

Animal models of autoimmune illnesses have provided invaluable insights into the mechanism of autoimmunity, human autoimmunity, and prospective therapies. Certain inbred animal breeds develop autoimmunity naturally, and autoimmunity can also be caused by certain experimental procedures. Autoimmunity Can Develop Spontaneously in Animals Autoimmunity Can Be Induced Experimentally in Animals

Hypersensitivity – Definition, Types, Mechanisms, Examples

Hypersensitivity - Definition, Types, Mechanisms, Examples

What is Hypersensitivity? Definition of Hypersensitivity Hypersensitivity is an abnormal and exaggerated response of the immune system to a substance (antigen) that is usually harmless. It can lead to allergic reactions and immune-related diseases. Causes Of Hypersensitivity Diseases Hypersensitivity is caused by various immune responses that can be triggered by different types of antigens. The … Read more

Cytotoxic T cells – Development, Activation, Functions

Cytotoxic T cells

What is a Cytotoxic T cell? Development of CD8+ T cells Effector CTLs Are Generated from CTL Precursors Activation and differentiation of CD8+ T cells Cytotoxicity Mediated by CD8+ T Role in anti-viral immunity Role in anti-tumor immunity What are Memory CD8+ T cells? All of these effector and memory subsets work together to generate … Read more

Cell Mediated Immune Response 

Cell Mediated Immune Response 

Cell-Mediated Immunity Definition CMI is an unique sort of acquired immune response that is not mediated by antibodies but rather by sensitised T cells. This type of immunity is passed from donor to recipient without the need of antisera, but rather with intact lymphocytes; therefore, it is referred to as cell-mediated immune reaction. Contrary to … Read more

Immunological Tolerance – Definition, Mechanism, Types

Immunological Tolerance - Definition, Mechanism, Types

Definition of Immunological Tolerance Immunological tolerance is a state of specific immunologic nonreactivity to a specific antigen to which an individual has been previously exposed. Immune tolerance stops the immune system from responding to self-antigens. Mechanisms of Tolerance The proposed mechanisms of tolerance are clonal deletion, clonal anergy, and suppression. Clonal deletion: Clones of B … Read more

Nosocomial Infection – Prevention, Source, Transmission

Nosocomial Infection

A nosocomial infection, also known as a hospital-acquired infection, is an infection that a patient contracts during the course of receiving treatment for another condition in a healthcare setting such as a hospital, nursing home, or clinic. Nosocomial infections have been a significant problem throughout history, with reports of healthcare-associated infections dating back to the … Read more

The Complement Pathway – Activation, Functions, and Deficiencies.

The Complement Pathway

Hey, in this article I will discuss the complement pathway which is one of the easiest pathways. Basically, This complement pathway helps to kill microorganisms  by antibodies or phagocytosis. The complement pathway has been accomplished in three main ways, which I have discussed step by step below. Believe me, if you understand the first step … Read more

Diatoms – Definition, Structure, Life Cycle, Importance

Diatoms - Definition, Structure, Life Cycle, Importance

What is Diatom? Definition of Diatom A diatom is a tiny, single-celled algae with a hard shell made of silica, found in oceans, waterways, and soil. They play a crucial role in oxygen production, nutrient cycling, and the food web of aquatic ecosystems. Scientific classification of Diatom Domain: Eukaryota Clade: Diaphoretickes Clade: SAR Clade: Stramenopiles … Read more

11 Types of Algae With their example.

Bright field microscopy images of twisted bipolar droplets in a sample of CCN-37 +5.9%CC. They all rotate clockwise as can be seen in the video S3 of the supplemental material. The bar represents 50 μm. ΔT ¼ 1:25 C and d ¼ 50 μm.

In this article, we will learn about different types of algae and their characters such as; Chlorophyceae (Green algae), Phaeophyceae (Brown Algae),  Rhodophyceae (Red Algae), Xanthophyceae (Yellow-Green Algae), Chrysophyceae (Golden Algae), Bacillariophyceae (Diatoms), Cryptophyceae, Dinophyceae, Chloromonadineae, Euglenineae, and Cyanophyceae or Myxophyceae (Blue-green algae). What is Algae? Types of Algae F.E. Fritsch divides the algae into … Read more

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