Tissue fixation types mechanism( bone, skin, biopsies, liver) histology

It is fixation is important in tissue processing because it preserves the anatomy of different tissues. It makes tissue hard so that a thin section can be made from it.   Tissue fixation means the process by which components of the cell and tissues are fixed physically and partially by chemical methods. So that it … Read more

Cytology cell block preparation procedure steps cytology

A cytology cell block is an important procedure. Block can be prepared from the FNA aspirant or other body fluids like peritoneal, and cerebrospinal fluid. Cell block preparation procedure steps in the cytology The following are the cell block preparation steps in the cytology lab. The aspirated material from the syringe is rinsed thoroughly with … Read more

Fine needle aspiration biopsy procedure thyroid cytology (fnac), complications

Fine needle aspiration procedure steps cytology (fnac), complications

Fine needle aspiration cytology procedure or FNAc. It is an inexpensive but important technique in the cytology laboratory. It is a rapid method of assessing the lesions and masses in the body. Fine needle aspiration is a type of aspiration by which a fine needle is inserted and used to collect the sample from superficial … Read more

Cytology specimen collection and handling (Sputum specimen) in histology lab

There are many types of specimens for cytological examination. Cytology specimen collection and handling are very sensitive. Each sample has its own standard operating procedure. But some steps are common in all.  We need these things     Fixatives Container or jar – Coplin jar made of glass or plastic is used as a fixative … Read more

Clinical microbiology final exam quizlet Chapter 5-6

Here is the most important Quizlet of the microbiology final exam for medical students to refresh their knowledge. Chose the gram-positive bacteria. a. Neisseria, b. Klebsiella, c. Clostridium Free-living, Thick wall, cause abscess of skin. Characteristics of.  a. Streptococcus b. Staphylococcus c.  Bacillus Extracellular bacteria, thick wall, spore-forming aerobe Characteristics of. a. Clostridium b. Corynebacterium … Read more

C-reactive protein test method procedure, High, Low

c-reactive protein blood test principle, procedure, indications, High, Low

CRP test is an important biomarker of inflammatory cytokinesis such as interleukin-6. Therefore c-reactive blood test is used to assess their concentration. It is classified as an acute-phase reactant, which means c-reactive protein concentration rises within a few hours. C-reactive protein increases in the following conditions, Cell injuries Infections Inflammation C-reactive protein principle This test … Read more

Tissue collection method in histology laboratory (Liver, bone, renal)

We collect and deal with different types of tissues biopsy in the histopathology laboratory. The tissue collection method in the histology laboratory has the following steps. Role of Fixative in tissue collection method After the removal of surgical specimens, they should be placed in a container filled with fixative. For the best fixation, tissue should … Read more

Types of Histology stains – acidic, basic, neutral stains

Tissue staining is the second step after collection.Different tissues are colored.differently.There are three main types of histology stains. Specially prepared dyes are used for such staining purposes. Such dyes are prepared by adding the cytochrome to a chromophore. Note: Cytochrome is a compound when mixed with chromophore, forms a dye. This dye can be acidic … Read more

Chemical method of determining end-point of decalcification

Decalcification is a process used to remove calcium salts from tissue samples. This is primarily done in histology and pathology laboratories. It makes the samples suitable for further processing and microscopic examination.  There are many methods, which used to check the decalcification of the different types of tissues. Here we will learn about “End point … Read more

Tissue Processing Steps, Dehydration, clearing, impregnation, embedding histopathology lab

Tissue processing is an important procedure in the histopathology laboratory. It is used to preserve the anatomy of the tissue. In order to cut the fine section of tissue, we need suitable hardness and consistency in the tissue. Therefore these properties can be imparted by the infiltration, by the paraffin wax, celloidin, and by resins. Some … Read more