Results 71 to 80 of about 311,180 (268)

Nanoscale cuticle mass density variations influenced by pigmentation in butterfly wing scales [PDF]

open access: yesarXiv, 2023
How pigment distribution influences the cuticle density within a microscopic butterfly wing scale, and how both impact final reflected color remains unknown. We used ptychographic X-ray computed tomography to quantitatively determine, at nanoscale resolutions, the three-dimensional mass density of scales with pigmentation differences.
arxiv  

A non-linear irreversible thermodynamic perspective on organic pigment proliferation and biological evolution [PDF]

open access: yesJ. Phys.: Conf. Ser. 475 012010, 2013, 2013
The most important thermodynamic work performed by life today is the dissipation of the solar photon flux into heat through organic pigments in water. From this thermodynamic perspective, biological evolution is thus just the dispersal of organic pigments and water throughout Earth's surface, while adjusting the gases of Earth's atmosphere to allow the
arxiv   +1 more source

Theoretical Study on Cryogen Spray Cooling in Laser Treatment of Ota’s Nevus: Comparison and Optimization of R134a, R404A and R32

open access: yesEnergies, 2020
Cryogen spray cooling (CSC) could be applied clinically for the laser therapy of Ota’s nevus, a dermal hyperplastic pigmented disease with a morbidity rate of 0.1–0.6% in the Asian population.
Jiameng Tian   +3 more
semanticscholar   +1 more source

Analysis of Major Histocompatibility Antigens and the Mononuclear Cell Infiltrate in Halo Nevi [PDF]

open access: yes, 1985
A series of monoclonal antibodies was used to characterize the nevomelanocytes and the inflammatory infiltrate of 11 halo nevi in different stages of resolution, employing an immunoperoxidase technique.
Bergman, Wilma   +3 more
core   +1 more source

Detection of circulating tumor cells is achieved by flow cytometry in melanoma patients

open access: yesCytometry Part B: Clinical Cytometry, EarlyView.
Abstract Melanoma is an aggressive skin tumor whose incidence is rising sharply, and for which the determination of new prognostic factors is a major challenge. In oncology, circulating tumor cells (CTCs) are at the heart of much research, as they represent a source of tumor material obtained non‐invasively by liquid biopsy.
Ludivine Fourdrain   +7 more
wiley   +1 more source

Pigmented spindle-cell nevus: A melanoma simulator

open access: yesDermatology Online Journal, 2004
Author(s): Maurichi, Andrea, MD; Baldi, Marzia, MD; Bartoli, Cesare, MD; Bono, Aldo, MD; Camerini, Tiziana, PhD; Moglia, Daniele, MD; Patuzzo, Roberto, MD; Pennacchioli, Elisabetta, MD; Tragni, Gabrina, MD; Santinami, Mario ...
Maurichi, Andrea, MD   +9 more
openaire   +5 more sources

Clinical and Dermoscopic Features of Agminated Blue Nevus [PDF]

open access: yes, 2007
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Cerroni, Lorenzo   +3 more
core   +1 more source

Deep penetrating nevus: a case report and brief literature review

open access: yesDiagnostic Pathology, 2006
Background - Deep penetrating nevus (DPN) is a distinct variant of melanocytic nevus and remains a histopathologic challenge to pathologists because of its resemblance to blue nevus, malignant melanoma, pigmented Spitz nevus, and congenital melanocytic ...
Dang Linh M   +3 more
doaj   +1 more source

Topical imiquimod and in situ vulvar melanoma: A promising therapy?

open access: yesInternational Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objectives Vulvar melanoma is a rare type of cancer that affects mainly postmenopausal women. There are no established protocols for the treatment of vulvar melanoma. From data extrapolated from the literature on cutaneous melanoma, surgical excision remains the best option for the resectable disease.
Francesca Pepe   +7 more
wiley   +1 more source

Melanoma maligno y diagnóstico diferencial de lesiones pigmentadas en piel [PDF]

open access: yes, 2011
ResumenEl enfrentamiento a una lesión pigmentada cutánea es frecuente en la práctica médica diaria. Dado que el diagnóstico diferencial incluye al Melanoma Maligno (MM) y considerando que su pronóstico está claramente determinado por la precocidad del ...
Rodrigo Schwartz, A.
core   +2 more sources

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