Sagar Aryal

Sagar Aryal is a microbiologist and a scientific blogger. He is doing his Ph.D. at the Central Department of Microbiology, Tribhuvan University, Kathmandu, Nepal. He was awarded the DAAD Research Grant to conduct part of his Ph.D. research work for two years (2019-2021) at Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarbrucken, Germany. Sagar is interested in research on actinobacteria, myxobacteria, and natural products. He is the Research Head of the Department of Natural Products, Kathmandu Research Institute for Biological Sciences (KRIBS), Lalitpur, Nepal. Sagar has more than ten years of experience in blogging, content writing, and SEO. Sagar was awarded the SfAM Communications Award 2015: Professional Communicator Category from the Society for Applied Microbiology (Now: Applied Microbiology International), Cambridge, United Kingdom (UK). Sagar is also the ASM Young Ambassador to Nepal for the American Society for Microbiology since 2023 onwards.

Biochemical Test of Bacillus anthracis

May 3, 2022April 19, 2021 by Sagar Aryal

Biochemical Test of Bacillus anthracis Basic Characteristics Properties (Bacillus anthracis) Capsule Capsulated Catalase Positive (+ve) Gas Negative (-ve) Gelatin Hydrolysis Positive (+ve) Gram Staining Positive (+ve) Hemolysis Negative (-ve) Indole … Read more

Human Astrovirus- An Overview

August 10, 2021April 19, 2021 by Sagar Aryal

Structure of Human Astrovirus Human astrovirus falls under Astroviridae and genus Mamastrovirus. The particles are round in shape, 28 nm in diameter with a smooth margin and display a five or … Read more

Gram-positive cell wall

August 10, 2021April 18, 2021 by Sagar Aryal

Prokaryotic cells almost always are bounded by a fairly rigid and chemically complex structure present between the cell membrane and capsule/slime layer called the cell wall. Peptidoglycan is the main … Read more

Biochemical Test of Staphylococcus epidermidis

May 3, 2022April 17, 2021 by Sagar Aryal

Biochemical Test of Staphylococcus epidermidis Basic Characteristics Properties (Staphylococcus epidermidis) Capsule Mostly Capsulated Catalase Positive (+ve) Citrate Negative (-ve) Coagulase Negative (-ve) Gas Positive (+ve) Gelatin Hydrolysis Negative (-ve) Gram … Read more

Pathogenesis and Clinical Manifestation of Neisseria gonorrhoeae

July 27, 2021April 17, 2021 by Sagar Aryal

Virulence factors or antigenic structures of Neisseria gonorrhoeae A. Pili Pili are the hair like appendages that extend up to several micrometers from the gonococcal surface. It mediates the exchange … Read more

Collection and transport of stool specimens

August 10, 2021April 16, 2021 by Sagar Aryal

Faecal specimens should be collected in the early stages of the diarrhoeal disease, when pathogens are present in the highest number, and preferably before antimicrobial treatment is started, if appropriate. … Read more

Biochemical test of Citrobacter freundii

May 3, 2022April 10, 2021 by Sagar Aryal

Biochemical test of Citrobacter freundii Basic Characteristics Properties (Citrobacter freundii) Capsule Negative (-ve) Catalase Positive (+ve) Citrate Positive (+ve) Flagella Positive (+ve) Gas from glucose Positive (+ve) Gelatin Hydrolysis Negative (-ve) … Read more

Biology of the B Lymphocyte

August 10, 2021April 9, 2021 by Sagar Aryal

B lymphocytes They acquired their name from early experiments in chickens. The synthesis of antibody was shown to require the presence of an organ called the bursa of Fabricius (an … Read more

Laboratory diagnosis of Leprosy caused by Mycobacterium leprae

August 10, 2021April 6, 2021 by Sagar Aryal

Laboratory diagnosis of Leprosy caused by Mycobacterium leprae Specimen Skin biopsies, nasal discharges, scrapings from the nasal mucosa and slit-skin smears which are prepared by making superficial incisions in the … Read more