Publications by authors named "S E Alexander"

Melanoma is a malignant disorder of the skin that originates from melanocytes. It is the most aggressive of the skin malignancies. This case study presents a unique case of a 52-year-old male gardener with melanoma on the plantar side of his foot, which progressed to a large ulcer.

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Collective migration of cancer cells is often interpreted using concepts derived from the physics of active matter, but the experimental evidence is mostly restricted to observations made in vitro. Here, we study collective invasion of metastatic cancer cells injected into the mouse deep dermis using intravital multiphoton microscopy combined with a skin window technique and three-dimensional quantitative image analysis. We observe a multicellular but low-cohesive migration mode characterized by rotational patterns which self-organize into antiparallel persistent tracks with orientational nematic order.

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Introduction: While clinical practice guidelines (CPGs) for pediatric oncology infection prophylaxis and management exist, few data describe actual management occurring at pediatric oncology centers.

Methods: An electronic survey querying infection management practices in nontransplant pediatric oncology patients was iteratively created by the Children's Oncology Group (COG) Cancer Control and Supportive Care Infectious Diseases Subcommittee and sent to leaders at all COG institutions, limiting each site to one response to represent their institution.

Results: The response rate was 57% (129/227 institutions).

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Cellulose microgel beads fabricated using the dropping technique suffer from structural irregularity and mechanical variability. This limits their translation to biomedical applications that are sensitive to variations in material properties. Ionic salts are often uncontrolled by-products of this technique, despite the known effects of ionic salts on cellulose assembly.

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Article Synopsis
  • Many medical curricula lack sufficient nutrition education, which is crucial for health outcomes.
  • A new online nutrition module was developed and tested on 15 medical students, showing a significant increase in knowledge from pre-assessment to post-assessment.
  • The module was effective in teaching essential nutrition topics and demonstrated that students retained most of the information even two months later.
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