Histologist Course

Lesson 1 • Overview of the Four Tissue Types

Introduces epithelial, connective, muscle, and nervous tissues and their defining characteristics. Provides the classification framework used throughout the course.

Lesson 2 • Histological Terminology and Nomenclature

Establishes precise vocabulary for describing tissue morphology and cellular features. Accurate terminology is essential for laboratory reporting and professional communication.

Lesson 3 • The Cell as the Basic Unit

Covers organelle structure, membrane dynamics, and cell cycle fundamentals. Establishes the cellular framework required for interpreting tissue architecture.

Lesson 1 • Brightfield and Phase Contrast Microscopy

Teaches operation of brightfield and phase contrast microscopes for routine tissue examination. These modalities are the primary tools used in standard histology workflows.

Lesson 2 • Laboratory Documentation and Quality Records

Establishes protocols for logging specimens, reagents, and instrument maintenance. Accurate records support traceability and regulatory compliance.

Lesson 3 • Microtome and Cryostat Operation

Introduces rotary microtome and cryostat mechanics for producing thin tissue sections. Proper sectioning technique directly determines staining and diagnostic quality.

Lesson 4 • Histology Laboratory Safety Standards

Covers chemical hazard classification, personal protective equipment, and emergency procedures. Safety compliance underpins every subsequent laboratory activity.

Lesson 1 • Fixation Principles and Fixative Types

Explains chemical fixation mechanisms, common fixative formulations, and fixation time variables. Fixation quality determines all downstream staining and antigen retrieval outcomes.

Lesson 2 • Specimen Receipt and Gross Examination

Covers accessioning, gross description, and initial dissection of fresh tissue. Proper handling at this stage prevents artifact and ensures representative sampling.

Lesson 3 • Tissue Dehydration and Clearing

Teaches graded alcohol dehydration and clearing agent selection for paraffin infiltration. Incomplete dehydration causes embedding artifacts that compromise section quality.

Lesson 4 • Paraffin Infiltration and Embedding

Covers wax infiltration parameters and embedding orientation techniques. Correct orientation is critical for obtaining diagnostically useful tissue planes.

Lesson 1 • Haematoxylin and Eosin Staining Principles

Explains dye chemistry, staining mechanisms, and the role of mordants in H&E. H&E is the universal baseline stain against which all other methods are compared.

Lesson 2 • Connective Tissue Special Stains

Covers Masson trichrome, van Gieson, and reticulin stains for collagen and fibre visualization. These stains extend diagnostic capability beyond H&E for fibrotic and vascular pathology.

Lesson 3 • Stain Troubleshooting and Quality Control

Identifies common staining defects, their causes, and corrective actions. Systematic troubleshooting maintains slide quality and reduces diagnostic error.

Lesson 4 • H&E Staining Protocol Execution

Provides step-by-step manual and automated H&E staining procedures with quality checkpoints. Consistent execution produces reproducible nuclear and cytoplasmic contrast.

Lesson 1 • Microorganism Detection Stains

Teaches Gram, Ziehl-Neelsen, Grocott methenamine silver, and PAS stains for pathogens. Pathogen identification in tissue sections is critical for infectious disease diagnosis.

Lesson 2 • Enzyme Histochemistry Techniques

Applies alkaline phosphatase, ATPase, and NADH-TR reactions to frozen sections. Enzyme histochemistry is indispensable for muscle fibre typing and metabolic disease evaluation.

Lesson 3 • Neuropathology Special Stains

Covers Luxol fast blue, Bielschowsky silver, and Nissl stains for neural tissue components. These stains support diagnosis of demyelinating, degenerative, and neoplastic CNS conditions.

Lesson 4 • Principles of Histochemical Reactions

Explains chemical and enzymatic reaction mechanisms underlying histochemical staining. Understanding reaction chemistry enables rational stain selection and troubleshooting.

Lesson 1 • Antigen Retrieval Methods

Covers heat-induced and enzymatic antigen retrieval strategies for formalin-fixed tissue. Retrieval restores epitope accessibility lost during fixation and is essential for IHC sensitivity.

Lesson 2 • Antibody Structure and Antigen-Antibody Binding

Reviews immunoglobulin structure, epitope recognition, and affinity concepts relevant to IHC. This foundation explains why antibody selection and validation are critical to assay reliability.

Lesson 3 • IHC Protocol Execution and Controls

Provides end-to-end IHC staining workflow with mandatory positive and negative controls. Rigorous control use is the primary safeguard against false-positive and false-negative results.

Lesson 4 • IHC Interpretation and Scoring

Teaches subcellular localisation assessment, staining intensity scoring, and percentage estimation. Standardised scoring ensures reproducible, clinically actionable IHC reporting.

Lesson 1 • Chromogenic In Situ Hybridisation

Covers CISH probe application, signal amplification, and chromogenic detection on paraffin sections. CISH provides gene copy number data with standard brightfield microscopy.

Lesson 2 • Fluorescence In Situ Hybridisation

Teaches FISH probe design, hybridisation, and fluorescence signal enumeration for gene analysis. FISH is the standard method for detecting gene amplification and chromosomal rearrangements.

Lesson 3 • Integrating Molecular and Morphological Data

Combines ISH, IHC, and morphological findings into a unified diagnostic interpretation. Integration skills are essential for precision oncology and complex diagnostic cases.

Lesson 4 • RNA In Situ Hybridisation

Applies RNAscope and similar platforms for single-molecule RNA detection in tissue. RNA ISH enables gene expression profiling with spatial context preserved.

Lesson 1 • Regulatory Compliance and Accreditation

Addresses laboratory accreditation standards, competency assessment, and audit preparation. Compliance ensures patient safety and sustains laboratory operational status.

Lesson 2 • Recognising Common Tissue Artifacts

Identifies processing, sectioning, and staining artifacts and distinguishes them from true pathology. Artifact recognition prevents misdiagnosis and guides corrective processing steps.

Lesson 3 • Tumour Histology Classification Principles

Applies WHO classification criteria to categorise epithelial, mesenchymal, and haematopoietic tumours. Classification accuracy directly impacts treatment selection and patient outcomes.

Lesson 4 • Systematic Approach to Slide Interpretation

Establishes a structured low-to-high magnification scanning strategy for tissue evaluation. A systematic approach reduces missed findings and supports consistent diagnostic conclusions.