Quality control strains
Antimicrobial Resistance

Quality Control Strains (standard strains) and their Uses

Quality control strains (standard strains) are well-characterized microorganisms with defined susceptibility or resistance profiles to the antimicrobial agent(s) tested. They are routinely used to standardize the antibiotic susceptibility testing (AST) methodologies and to check the […]

Ambler classification of beta-lactamases
Antimicrobial Resistance

ESBL and Classification of β-lactamases

Last updated on June 21st, 2021ESBL stands for extended-spectrum beta-lactamases, i.e. a group of enzymes produced by both Gram-negative and Gram-positive bacteria which can hydrolyze all β- lactam agents except carbapenems and cephamycins. ESBLs belong […]

Mucor has a columella but no apophysis whereas Lichtheimia has both a columella and apophysis.
Lab Diagnosis of Fungal Disease

Laboratory Diagnosis of Mucormycosis

Last updated on June 14th, 2021Mucormycosis is a rare and life-threatening fungal disease caused by a group of fungi collectively known as mucormycetes. Since the disease is very fatal, timely diagnosis is crucial for treatment, […]

Mechanism of macrolides
Antimicrobial Resistance

Macrolides: Mode of Action, Mechanism of Resistance

Last updated on July 4th, 2021Macrolides are primarily bacteriostatic antibacterial agents that inhibit bacterial protein synthesis by binding with 50S subunit of the ribosome. Members of the group include erythromycin, azithromycin, clarithromycin, roxithromycin, dirithromycin, and telithromycin. […]