This model highlights the necessity of diffusion-mediated matrix deposition for complex enamel development and shows how even simple mechanisms have allowed biology to flourish into complexity.

Despite the prominence of this diffusion-based model in development, quantitative studies, largely performed in animals, have not yet demonstrated this simple mechanism in multicellular tissues.

Continuing an earlier paper, it is shown here by means of simple examples that the Eyring formalism may be extended to include diffusion-controlled processes if a new frequency factor, D/RΛ , is ...

This study reports the passive diffusion (in vitro) of silver nanoparticles (SNPs) and those of the amino acids tryptophan, phenylalanine, tyrosine across a biological membrane model. The experiments ...