Photolab
Photolab
A ship’s rogue
A brittle star measuring only two cm in diameter, Ophiothela mirabilis, native to the Pacific Ocean, was photographed by marine biologist Alvaro Esteves Migotto in the Atlantic Ocean off the Brazilian coast. The brittle star has become an abundant invasive species in the 10-15-meter shallow waters off southeastern Brazil. Its more frequent occurrence in the... View Article
By Redação
Photolab
Cell differentiation
The two photos above show the in vitro transformation of eucalyptus “stem cells” (on the left) into tracheids, cells that control the wood forming process (on the right). Pedro Barrueto, a researcher at the Luiz de Queiroz School of Agriculture (Esalq/USP), was able to bring about the differentiation by treating the material with a hormone.... View Article
By Redação
Photolab
Pathways of silver
No, they aren’t the branches of a plant. The picture above shows the aggregates of silver atoms that form when silver nitrate solution comes into contact with metallic copper on a glass surface. The silver branch is 250 micrometers high (one micrometer is one millionth of a meter) and the photo was taken using a... View Article
By Redação
Photolab
Luminous signs
ALINE ZAMBONI MACHADO / USPFar from its normal home in the venom of the pit viper (Bothrops alternatus), a protein finds a resting place where can linger. Marked red, alternagin-C binds to the abundant receptors found on the surface of tumor cells in the cervix, the nuclei of which appear blue, and may serve as... View Article
Photolab
Direction sensors
Direction sensors
Photolab
Dangerous jewelry
Dangerous jewelry