What are the Cells of Immune System? (Basic Immune Cells)

Cells of Immune System

Lymphocytes are the central cells of immune system, responsible for acquired immunity & the immunologic attributes of diversity, specificity, many and self/non-self recognition. It constitutes 20% to 40% of the body’s WBC and 99% of the cells in the lymph. The lymphocytes can be broadly subdivided into three populations – B-cells, T-cells, Null cells-on the … Read moreWhat are the Cells of Immune System? (Basic Immune Cells)

What is Chemical Bonding? Basic Mechanism of Bonding

chemical bonding

During the nineteenth century, chemists arranged the then-known elements according to chemical bonding, recognizing that one group (the furthermost right column on the Periodic Table, referred to as the Inert Gases or Noble Gases) tended to occur in elemental form (in other words, not in a molecule with other elements). It was later determined that … Read moreWhat is Chemical Bonding? Basic Mechanism of Bonding

What is mitosis? Steps of Mitosis and Importance

Mitosis stages and importance

What is Mitosis? mitosis definition is the division of the mother cell into two daughter cells genetically identical to each other. It is a nuclear division plus cytokinesis and produces two identical daughter cells during prophase, prometaphase, metaphase, anaphase, and telophase. Interphase is often included in discussions of mitosis, but interphase is technically not part of the … Read moreWhat is mitosis? Steps of Mitosis and Importance

Endoplasmic Reticulum : Basics and Functions

Endoplasmic Reticulum

According to Dallmer (1966), Endoplasmic Reticulum is originated from the plasma membrane by the investigation. According to Derobertis (1970), the ER originates from the nuclear envelope. The Endoplasmic Reticulum (ER) is a strikingly complex structure within the cell and has three morphologically distinct regions: Sheets of the nuclear envelope A network of interconnected peripheral ER tubules Peripheral ER sheets … Read moreEndoplasmic Reticulum : Basics and Functions

Nucleic Acid Structures: Basic structures of Nucleosides, Nucleotides

Nucleic Acids Structures

In Nucleic acid structures, there are two types of nucleic acid. They are DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are polymers of nucleotides linked in a chain through phosphodiester bonds. In biological systems, they serve as information-carrying molecules or, in the case of some RNA molecules, catalysts. This brief review will focus on aspects of the … Read moreNucleic Acid Structures: Basic structures of Nucleosides, Nucleotides