Secondary Students' Reasoning on Pedigree Problems.

Pedigree problems are typical genetics tasks in schools. They are well suited to help students learn scientific reasoning, representing realistic genetic problems. However, pedigree problems also pose complex requirements, especially for secondary students.

Perception of risk, sexual behaviour and STD/HIV prevalence in western Kenya.

Objective: To determine the feasibility and acceptability of collecting data on sexual practices, knowledge, attitudes and perception of risk with regard to HIV and STD infection in two clinic populations.

Design: A cross sectional survey carried out between June and July 1992.

Setting: An urban and a rural health centre in western Kenya.

Subsequent sexually transmitted infections among adolescent women with genital infection due to Chlamydia trachomatis, Neisseria gonorrhoeae, or Trichomonas vaginalis.

Objective: To identify factors associated with subsequent sexually transmitted infection (STI) (within 1 year of initial infection) due to Chlamydia trachomatis, Neisseria gonorrhoeae or Trichomonas vaginalis.

Design: Prospective cohort study.

Setting: A sexually transmitted diseases clinic and four community-based primary care clinics for adolescents.

Disseminated sporotrichosis and Sporothrix schenckii fungemia as the initial presentation of human immunodeficiency virus infection.

Infection with Sporothrix schenckii causes a localized lymphocutaneous disease in the immunocompetent host, while it frequently results in disseminated disease in the immunocompromised patient. There are a growing number of reports of S. schenckii infection in the human immunodeficiency virus (HIV)-infected population, where the disease usually starts as a localized cutaneous lesion and subsequently disseminates.

Detection of human papillomavirus L1 protein in condylomata acuminata from various anatomical sites.

Background And Objectives: Though human papillomavirus (HPV) DNA can be detected in the majority of condylomata acuminata, the major capsid protein of HPV (L1 protein) can be detected in only 10% to 50% of lesions in immunohistochemical assays.

Goal Of Study: To evaluate the association between anatomic location of genital HPV infections and the ability to detect HPV L1 protein.

Methods: Condylomata acuminata from 49 male and 51 female patients were evaluated for L1 protein by immunohistochemistry.