T cells (also called T lymphocytes) are one of the major components of the adaptive immune system.
Their roles include directly killing infected host cells, activating other immune cells, producing cytokines and regulating the immune response.
According to recent research natural exposure or infection with the novel coronavirus may “prevent recurrent episodes of severe COVID-19”.
The study found SARS-CoV-2-specific T cells even in family members who have been exposed to the virus but have tested negative on antibody blood tests.
All categories of people recovered from moderate or severe COVID-19 disease, or in the convalescent phase after mild or severe disease or exposed family members or healthy people exhibited “robust memory T cell responses months after infection, even in the absence of detectable circulating antibodies specific for SARS-CoV-2.
This indicates a previously unanticipated degree of population-level immunity against COVID-19.
This implies that seroprevalence (the level of a pathogen in a population, as measured in blood serum) as an indicator may underestimate the extent of immunity in the population.
Even as antibodies wane with time, robust T cell memory formed after SARS-CoV-2 infection suggests that “potent adaptive immunity is maintained to provide protection against severe re-infection”.
Study planner is an invaluable tool for students, enabling them to assess
their strengths and weaknesses through tests. It calculates the optimal daily study time
required to cover the syllabus. This personalized approach enhances productivity and fosters
effective time management, ultimately boosting academic performance.
PERSONALISED TEST
A personalized test allows students to select their preferred topic and
subtopic from the curriculum. It generates a tailored examination by randomly selecting
questions related to their choices. This approach promotes engagement, reinforces specific
learning objectives, and fosters a deeper understanding of the material through active
participation in the assessment process.
PREDECTIVE ANALYTICS
The analytics system tracks the time spent and records correct answers for
all questions attempted. It compiles this data into analyses, offering students valuable
insights into their preparation, identifying strengths and weaknesses, and helping them
optimize their study strategies for improved performance.