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Dalmau Plate Technique: Introduction, Principle, Test Requirements, Procedure, Application, and Keynotes

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Dalmau Plate Microscopy at high power field (40X objective)

Introduction The Dalmau plate technique is a classic mycological method used to identify and differentiate yeast species, specifically Candida species, by observing their unique morphological features.  The technique is a specialized culture method that uses a “starvation medium” to induce the formation of characteristic structures like pseudohyphae, blastoconidia, and chlamydospores. It remains …

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Rothia kristinae: Introduction, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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R. kristinae in Gram-stained culture microscopy shows irregular, pleomorphic Gram-positive bacilli, ranging from short rods to e

Introduction Pathogenicity While typically considered a low-grade commensal, it causes serious infections primarily in immunocompromised patients or those with indwelling medical devices.  Lab Diagnosis Treatment There are no official clinical breakpoints, so treatment is often guided by expert consultation and raw Minimum Inhibitory Concentration (MIC) values.  Prevention Keynotes …

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Serpentine Cord: Introdction, Clinical Significance, and Keynotes

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Serpentine cord or Cord factor or Trehalose dimycolate,TDM of Mycobacterium tuberculosis complex (MTBC) in Ziehl-Neelsen Staining of modified Middlebrook 7H9 Broth at a magnification of 1600X

Introduction Clinical Significance Keynotes Further Readings

Lactococcus garvieae: Introduction, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Gram positive cocci of Lactococcus garvieae in Gram staining of repeated culture at a magnification of 4000X

Introduction Lactococcus garvieae is a Gram-positive, catalase-negative, non-spore-forming coccus, typically arranged in pairs or short chains. It belongs to the lactic acid bacteria group and is well known as a major pathogen in fish (lactococcosis). In humans, it is an emerging opportunistic pathogen, increasingly recognized …

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BAL Sample vs Sputum Sample – Key Differences

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BAL Sample vs Sputum Sample – Key Differences

Bronchoalveolar Lavage (BAL) and sputum are commonly used respiratory specimens. Still, they differ significantly in terms of source, quality, diagnostic value, and clinical utility, especially in patients with tuberculosis, fungal infections, pneumonia, and oncology. Basic Definition Feature BAL Sample Sputum Sample Definition Expectorated respiratory secretion …

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Ovarian Cancer: An Overview of Introduction, Types, Pathogenesis, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Introduction Ovarian cancer is a malignant tumor arising from ovarian tissues and is a leading cause of gynecologic cancer–related mortality worldwide. It is often called a “silent killer” because early-stage disease is frequently asymptomatic, resulting in late diagnosis and poorer outcomes. Types of Ovarian Cancer …

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Isolation and Preliminary Identification of Bacterial and Yeast Colonies on Sabouraud Dextrose Agar Using the Wet Mount Technique

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Isolation and Preliminary Identification of Bacterial and Yeast Colonies on Sabouraud Dextrose Agar Using the Wet Mount Technique

Introduction Sabouraud Dextrose Agar (SDA) is a commonly used culture medium in clinical mycology laboratories for the isolation of fungi, particularly yeasts and molds. Due to its acidic pH and high dextrose concentration, SDA favors fungal growth; however, bacteria and yeasts may also grow, especially …

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Head and Neck Cancer: An Overview of Introduction, Types, Pathogenesis, Lab Diagnosis, Treatment, Prevention, and Keynotes

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1. Introduction Head and neck cancers (HNCs) are a heterogeneous group of malignancies arising from the upper aerodigestive tract, including the oral cavity, pharynx, larynx, nasal cavity, paranasal sinuses, salivary glands, and thyroid. The majority are squamous cell carcinomas (HNSCC) originating from mucosal epithelium. These …

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