Anomalously fractionated sulfur isotopes in many sedimentary rocks older than 2.4 billion
years have been widely believed to be the products of ultraviolet photolysis of volcanic sulfur …

Microorganisms have flourished in the oceans since at least 3.8 billion years (3.8 Gyr) ago 1
, 2 , but it is not at present clear when they first colonized the land. Organic matter in some …

The presence of mass-independently fractionated sulphur isotopes (MIF-S) in many sedimentary
rocks older than ∼2.4 billion years (Gyr), and the absence of MIF-S in younger rocks, …

It is generally thought that, in order to compensate for lower solar flux and maintain liquid
oceans on the early Earth, methane must have been an important greenhouse gas before ∼…

Clethra barbinervis Sieb. et Zucc. is a tree species that grows naturally at several mine sites
and seems to be tolerant of high concentrations of heavy metals, such as Cu, Zn, and Pb. …

Ganglioside G M3 is a major glycosphingolipid in the plasma membrane and is widely distributed
in vertebrates. We describe here the isolation of a human cDNA whose protein product …

Working memory is a dynamic neural system for temporarily maintaining and processing
information. The prefrontal cortex (PFC) plays an important role in working memory. However, …

Association of gangliosides with specific proteins in the central nervous system was examined
by co-immunoprecipitation with anti-ganglioside antibody. Protein kinase activity was …

The timing of the origin of photosynthesis on the early Earth is greatly debated. It is generally
agreed, on the basis of the presence of biological molecules found in shales from the …

Genes in the FLOWERING LOCUS T (FT) and TERMINAL FLOWER 1 (TFL1) family have
been shown to be important in the control of the switch between vegetative and reproductive …