Natural killer (NK) cell
Natural killer (NK) cell Natural Killer (NK) cells are large granular lymphocytes (LGL) present in small proportion in spleen and peripheral blood. Unlike T-cell and […]
B- lymphocytes: surface receptor and functions
B- lymphocytes: surface receptor and functions The name B-cell is derived from its site of maturation and differentiation in Bursa of fabricius in Birds. In […]
T-lymphocyte: types and functions
T-lymphocyte: types and functions T-cells originate in bone marrow and mature and differentiate in thymus. The name T- cells is derived from its site of […]
Difference between innate and acquired immunity
Difference between innate and acquired immunity Point of distinction Innate immunity Acquired immunity Definition Immunity with which an individual is born Immunity which […]
Virulence factors of bacteria; microbial virulence factors
Virulence factors of bacteria; microbial virulence factors Virulence factor refers to the components or structure of microorganism that helps in establishment of disease or infection. […]
Inflammation or Inflammatory barrier of immune system
Inflammation or Inflammatory barrier of immune system Inflammation is an important defense mechanism of host to prevent infection. It is induced in response to tissue […]
Nervous tissue: Neuron and Neuroglia
Nervous tissue: Neuron and Neuroglia Nervous tissue contains densely packed nerve cell ( neuron),which are specialized for nerve impulse conduction. Origin- ectoderm Nervous tissue consists […]
Muscular tissue: skeletal, smooth and cardiac muscle
Muscular tissue: skeletal, smooth and cardiac muscle Muscles are made up of highly specialized thin and elongated cells called muscle fibres. The muscle fibres contains […]
Proper connective tissue: Areolar, Adipose, Reticular, white fibrous and yellow elastic tissue
In proper connective tissues, the matrix is soft, less rigid and shows varying degree of toughness. Accordingly the proper connective tissue have been divided into […]
Supportive connective tissue: Cartilage and Bone
Supportive connective tissue: Cartilage and Bone They are supporting tissue, forms endoskeleton of vertebrates, protect vital organs types- Cartilage: Hyline cartilage, elastic cartilage and fibrous […]