Science | Senioritis

Mohamed Abbas
June 21, 2023
Immunology

Unlocking the Immune Response: Antigen Uptake by Dendritic Cells, Macrophages, and B cells

Antigen recognition by T cells: Antigen uptake ~ Incorporation ofantigen (via phagocytosis, pinocytosis, or endocytosis). Antigen uptake is the process of taking up an antigen by antigen-presenting...

Mohamed Abbas
June 21, 2023
Immunology

Antigen Presentation Pathways: Key Mechanisms for T Cell Recognition and Immune Response Activation

Antigen recognition by T cells: Antigen presentation ~ APCs deliver an antigen-specific signal through the major histocompatibility complex (MHC)-peptide->T cell receptor (TCR) interaction on T cells.~ Note...

Mohamed Abbas
June 21, 2023
Immunology

T Cell Antigen Recognition: Key Steps in Adaptive Immune Response Activation

Antigen recognition by T cells: T cell activation ~ The required secondsignal is provided via CD80/86 – CD28 that induces the expression of CD154 first and CD152...

Mohamed Abbas
June 21, 2023
Virology

Exploring the Characteristics of Viruses: Their Structure, Reproduction, and Pathogenicity

What are some properties of a virus? 1. Its genome is surrounded by a protein capsid.2. Its genome consists of DNA or RNA.3. It is an obligate...

Mohamed Abbas
June 21, 2023
Virology

Discovering Viruses: The Groundbreaking Work of Dmitri Ivanovsky

What scientist is responsible for first discovering viruses (specifically, tobacco mosaic virus)…even though he called it a small bacteria or spore? Dimitri Ivanovski The scientist responsible for...

Mohamed Abbas
June 21, 2023
Virology

Unraveling the History of the Word ‘Virus’: From ‘Contagium Vivum Fluidum’ to ‘Biological Toxic Chemical’

Who first described the virus as “virus” as some kind of “biological toxic chemical”? Martinus Beijerinck The term “virus” was first coined by a Dutch microbiologist named...

Mohamed Abbas
June 21, 2023
Virology

Essential Role of Capsid in Viral Infection and Virulence

The protein subunits that surround the nucleic acid of a virus are known as what? capsomeres The protein subunits that surround the nucleic acid of a virus...

Mohamed Abbas
June 21, 2023
Virology

Arthropod-borne Viruses: Transmission and Prevention Methods

Arthropods typically serve as which mechanism of transmission of viruses? biological vector Arthropods serve as vectors or carriers of viruses, such as mosquitoes, ticks, and fleas. These...