pollen grain necklace | silver MnM Serotonin necklace V | gold

Serotonin necklace V | gold vermeil

same orientation

Louis Pasteur demonstrated in the 1850s that fermentation required living microorganisms

The antisense strand loads into RISC and guides the complex to a complementary mRNA

Why does it matter that the chloroplast was originally a free-living bacterium

pollen grain necklace | silver MnM Serotonin necklace V | goldPollen grain necklace sterling silver The pollen grain is the male gametophyte of seed plants. Every flowering species makes its own version, with a wall pattern so distinctive that palynologists can identify plant communities from sediment cores millions of years old. The thing carried on the wind in invisible quantities is, structurally, one of the most species specific objects in biology. The Science of the Pollen Grain The outer wall of a pollen