Results 61 to 70 of about 37,259 (377)

Inhibition and relaxation of sea urchin sperm flagella by vanadate [PDF]

open access: yes, 1980
Direct measurements of the stiffness (elastic bending resistance) of demembranated sera urchin sperm flagella were made in the presence of MgATP2- and vanadate.
Okuno, Makoto
core   +3 more sources

Microneedle-Based Vaccines [PDF]

open access: yes, 2009
The threat of pandemic influenza and other public health needs motivate the development of better vaccine delivery systems. To address this need, microneedles have been developed as micron-scale needles fabricated using low-cost manufacturing methods that administer vaccine into the skin using a simple device that may be suitable for self ...
Mark R, Prausnitz   +3 more
openaire   +2 more sources

Separable arrowhead microneedles [PDF]

open access: yesJournal of Controlled Release, 2011
Hypodermic needles cause pain and bleeding, produce biohazardous sharp waste and require trained personnel. To address these issues, we introduce separable arrowhead microneedles that rapidly and painlessly deliver drugs and vaccines to the skin. These needles are featured by micron-size sharp tips mounted on blunt shafts.
Leonard Y, Chu, Mark R, Prausnitz
openaire   +2 more sources

Substrate Deformation Predicts Neuronal Growth Cone Advance [PDF]

open access: yes, 1977
Although pulling forces have been observed in axonal growth for several decades, their underlying mechanisms, absolute magnitudes, and exact roles are not well understood.
Athamneh, Ahmad I.M.   +3 more
core   +1 more source

Preparation and Properties of Polyvinylpyrrolidone/Sodium Carboxymethyl Cellulose Soluble Microneedles

open access: yesMaterials, 2023
Transdermal drug delivery is a new means of delivering drugs through the skin to achieve therapeutic effects. Microneedles have several advantages, including low cost, easy self-administration, and high delivery efficiency.
Na Qiang   +7 more
semanticscholar   +1 more source

Polymer multilayer tattooing for enhanced DNA vaccination [PDF]

open access: yes, 2012
DNA vaccines have many potential benefits but have failed to generate robust immune responses in humans. Recently, methods such as in vivo electroporation have demonstrated improved performance, but an optimal strategy for safe, reproducible, and pain ...
Barouch, Dan H.   +7 more
core   +1 more source

The Progress in the Application of Dissolving Microneedles in Biomedicine

open access: yesPolymers, 2023
In recent years, microneedle technology has been widely used for the transdermal delivery of substances, showing improvements in drug delivery effects with the advantages of minimally invasive, painless, and convenient operation.
Xueqing Yu, Jing Zhao, Daidi Fan
semanticscholar   +1 more source

Fabrication of Circular Obelisk-Type Multilayer Microneedles Using Micro-Milling and Spray Deposition

open access: yesFrontiers in Bioengineering and Biotechnology, 2018
In this study we present the fabrication of multilayer microneedles with circular obelisk and beveled-circular obelisk geometries, which have potential applications in implantable drug delivery devices.
Min Jung Kim   +7 more
doaj   +1 more source

Poly(lactic-co-glycolic) acid drug delivery systems through transdermal pathway : an overview [PDF]

open access: yes, 2017
In past few decades, scientists have made tremendous advancement in the field of drug delivery systems (DDS), through transdermal pathway, as the skin represents a ready and large surface area for delivering drugs.
AE Porter   +37 more
core   +2 more sources

Bioinspired Rotation Microneedles for Accurate Transdermal Positioning and Ultraminimal-Invasive Biomarker Detection with Mechanical Robustness

open access: yesResearch, 2022
Microneedle permits transdermal biosensing and drug delivery with minor pain. However, accurate microneedle transdermal positioning with minimal skin deformation remains a significant technical challenge due to inhomogeneous skin topology and ...
Yilin Cai   +6 more
doaj   +1 more source

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