Bacteriophages: Discovery, Detection, and Applications in Modern Medicine
The history of bacteriophage discovery, how phages are detected in the environment, and why a century-old idea is now central to fighting antibiotic-resistant infections.
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Bacteriophage
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Bacteriophage: Structure, Replication (Lytic and Lysogenic), and Uses
The structure of a bacteriophage, how lytic and temperate phages replicate, the cI/cro switch that decides lysis versus lysogeny, and how prophages give bacteria toxin genes (lysog...
Phage Typing Method: Principle, Procedure, Results
How phage typing uses a bacterium's pattern of susceptibility to a phage panel to trace outbreaks, and why a "positive" result means the phage won.
Bacteriophage Plaque Assay: Principle, Procedure, Results
How the plaque assay counts infectious phage particles, why a "plaque" is the opposite of a bacterial colony, and where the dilution math trips students up.
Generalized Transduction: Mechanism, Clinical Significance, and How It Spreads Antibiotic Resistance
How a packaging mistake inside a bacteriophage accidentally hands a random bacterial gene to a new host, the 1952 experiment that revealed it, and why it still matters for antibiot...
Specialized Transduction: Mechanism, Steps, and How It Differs from Generalized Transduction
How a temperate phage's imprecise exit from a bacterial chromosome hands off specific genes to a new host, the discovery that defined the phenomenon, and a full comparison with gen...