Sourav Pan is the founder and sole author of Biology Notes Online. He holds a Bachelor of Science (B.Sc.) degree and an M.Sc. in Microbiology from the University of Calcutta. He creates educational resources covering microbiology, immunology, biotechnology, genetics, cell biology, botany, zoology, and other life-science subjects.
His goal is to make complex biological concepts easier to understand through well-structured, student-friendly articles based on academic textbooks, peer-reviewed research, and authoritative scientific sources. In addition to writing new content, he regularly reviews and updates articles to improve their accuracy, clarity, and educational value.
Grocott-Gomori’s Methenamine Silver (GMS) stain is the histological staining method that is used mainly for the detection of fungal microorganisms in tissue sections and smears. It is the process that was first developed by Gomori and later modified by Grocott, and it is used because of its high sensitivity to demonstrate carbohydrates present in the … Read more
Calcofluor White (CFW) is a fluorescent dye that is used for the quick detection of fungi, yeasts, and some parasites. It is a stilbene derivative and it is the compound that absorbs ultraviolet light and then emits a visible blue light. It binds with β-linked polysaccharides like chitin in fungal cell walls and cellulose in … Read more
Different stains have been developed over time to distinguish bacteria species, separating them morphologically and the specific characteristics they possess. The most popular stain is Gram staining, acid-fast staining, and endospore staining. Each stain aims at identifying and defining bacteria according to their forms and morphologies.
Different stains react or concentrate on different areas of a tissue or cell These properties can be utilized to highlight certain areas or regions. A few of the most well-known biological staining methods can be found below. If not otherwise indicated All of these dyes can be used on tissues and cells that are fixed as well as essential dyes (suitable for use in live organisms) are indicated.
What is Production Media? Production media is the nutrient-rich medium used to support the large-scale growth of microorganisms or cell cultures for the purpose of producing useful biological substances. It is designed in such a way that optimum growth conditions is maintained, and the metabolic activities of the organisms is supported for yielding products like … Read more
Northern blotting explained with its principle, required materials, procedure, RNA band interpretation, applications, advantages, limitations, and comparisons.
Protochordate larvae is the juvenile stage found in lower chordates, and it is seen in members of Urochordata and Cephalochordata. It is the stage where the animal shows the typical chordate features very clearly. It is the notochord, dorsal hollow nerve cord, pharyngeal slits, and the post-anal tail that appear in this larval period. It … Read more