Related Experiment Video
Updated: Jul 15, 2026

Stem-cell Based Engineered Immunity Against HIV Infection in the Humanized Mouse Model
Published on: July 2, 2016
Acquired immunodeficiency syndrome in a patient with hemophilia
Abstract:
A patient with hemophilia A developed T-cell deficiency characterized by infection with several opportunistic pathogens. Immunologic investigation showed cutaneous anergy, lymphocyte unresponsiveness to mitogens and antigens, an abnormal ratio of T-helper and T-suppressor cells with absolute lymphopenia and elevated IgA. The clinical and immunologic characteristics of this patient fit the recently described syndrome of opportunistic infections or Kaposi's sarcoma in patients with acquired T-cell deficiency; however, this patient does not have any of the associated underlying risk factors such as homosexuality, intravenous drug or amyl nitrite use, or positive serologic tests for syphilis. We conclude that the patient's acquired T-cell deficiency can be explained by exposure to a virus or other transmissible agent during factor VIII transfusions.
Related Concept Videos
Humoral Immune Responses
Disorders of Hemostasis
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Immunodeficiency Diseases
There are three main causes of immunodeficiency disorders...
Sexually Transmitted Infections
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...
Cryptococcal Meningitis

