Vrajesh Jha

Natural killer (NK) cells, an important component of innate immunity, are a distinct lineage of lymphocytes defined by the expression of CD56 and NKp46 and by the absence of CD3, providing a first line of defense against pathogens and cancer in a non-major-histocompatibility-complex- (MHC-) restricted fashion without the need of prior sensitization. Derived from the bone marrow, NK cells have wide ...

1. Introduction  Stress, a response to adverse stimuli, is difficult to define and understand because of its nebulous perception. According to Selye [1], “stress is the nonspecific response of the body to any demand”, whereas stressor can be defined as “an agent that produces stress at any time”. Therefore, stress represents the reaction of the animal organism (i.e., ...

Heat stress in broilers can be defined as the result of metabolic, hormonal, and immune system changes suffered by the birds when they are unable to dissipate sufficient body heat to the environment due to unsuitable conditions. Increases in environmental temperature and relative humidity are key components in this phenomenon. Broilers need different environmental temperatures at different ages to ...

There is a strong link between the stress and immune response of the birds. This article takes the learnings from the breakthrough work of research done by Selye in 1936 and Faber in 1964. Selye is the first scientist to give a scientific explanation for biological stress through General Adaptation Syndrome (GAS) model. Faber has reviewed more than 100 research articles to check the relevance of G ...