Related Experiment Video
Updated: Aug 6, 2026

Dried Blood Spots - Preparing and Processing for Use in Immunoassays and in Molecular Techniques
Published on: March 13, 2015
High incidence of precipitins in sera of heroin addicts
Abstract:
We analyzed sera of 50 consecutively hospitalized heroin-abuse patients for precipitins against several antigens. Forty-seven addicts had precipitins against extracts from moldy hay, and 34 against extracts from bagasse. Thirty-six showed precipitin bands against extracts from one or more of the following: Aspergillus, Micropolyspora faeni, and Thermoactinomyces vulgaris. These findings were significantly different from those of a control population (P less than .0001 for all antigens tested). The recent culture identification of bacteria and fungi from street heroin suggests that the addicted population may be injecting antigenic material intravenously, with subsequent antibody formation.
More Related Videos
Related Concept Videos
Immunoprecipitation
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Prevention of Further Absorption of Poison
Drug Abuse and Addiction: Pharmacological Phenomena
Opioid Analgesics: Synthetic and Semisynthetic Opioids
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Drug Toxicity: Allergic Reactions

