Sperm and egg cells, or gametes, are unusual. Egg cells are some of the largest cell types, and sperm are some of the smallest. In humans, these haploid cells come together to form diploid cells. It's ...

Just call them archaea (ar-kee-uh) - archaebacteria are no more. Archaea were once considered to be quite similar to bacteria, but these prokaryotes are just weird enough to be classified in their own ...

Figure 1: Electron microscopy and fluorescence light microscopy of the ‘Nanoarchaeum equitans’–Ignicoccus sp. coculture. In ss rRNA phylogenetic trees that are founded on the maximum parsimony, ...