Fixative (drawing): In drawing, a fixative is a liquid, similar to varnish, which is usually sprayed over a finished piece of artwork, usually a dry media artwork, to better preserve it and prevent smudging.Osmium tetroxideFormaldehydePolyvinyl alcoholVital stain: A vital stain in a casual usage may mean a stain that can be applied on living cells without killing them. Vital stains have been useful for diagnostic and surgical techniques in a variety of medical specialties.Dinitrogen tetroxideLow-voltage electron microscope: Low-voltage electron microscope (LVEM) is an electron microscope which operates at accelerating voltages of a few kiloelectronvolts or less. While the low voltage electron microscopy technique will never replace conventional high voltage electron microscopes, it is quickly becoming appreciated for many different disciplines.Fatty aldehyde: A fatty aldehyde is an aldehyde with a "fatty" aliphatic carbon chain attached that is typically eight carbon or more in length. In contrast, phenolic aldehydes are aromatic.Protozoan infection: Protozoan infections are parasitic diseases caused by organisms formerly classified in the Kingdom Protozoa. They include organisms classified in Amoebozoa, Excavata, and Chromalveolata.Acetic acid bacteria: Acetic acid bacteria (AAB) derive their energy from the oxidation of ethanol to acetic acid during fermentation. They are gram-negative, aerobic, rod-shaped bacteria.Virtual microscope: The Virtual Microscope project is an initiative to make micromorphology and behavior of some small organisms available online. Images are from Antarctica and the Baltic Sea and available at no cost.Potassium picrateHenry Wurtz: Henry Wurtz (5 June 1828 in Easton, Pennsylvania – 1910) was an American chemist. He graduated from Princeton in 1848, and then studied chemistry at the Lawrence Scientific School of Harvard.Oxymonad: The Oxymonads are a group of flagellated protozoa found exclusively in the intestines of termites and other wood-eating insects. Along with the similar parabasalid flagellates, they harbor the symbiotic bacteria that are responsible for breaking down cellulose.Trifluoroacetic anhydrideMicrowave chemistry: Microwave chemistry is the science of applying microwave radiation to chemical reactions.Microwaves in organic synthesis, Andre Loupy (ed), Wiley-VCH, Weinheim, 2006, http://www.List of photographic processes: A list of photographic processing techniques.Stichosome: Stichosome (from Greek stichos (στίχος) = row; soma (σῶµα) = body) is a multicellular organ that is very prominent in some stages of nematodes and consists of a longitudinal series of glandular unicellular cells (stichocytes) arranged in a row along the oesophagus that form the posterior esophageal glands. It opens into the esophageal lumen and apparently functions as a secretory gland and storage organ.Nucleic acid secondary structure: The secondary structure of a nucleic acid molecule refers to the basepairing interactions within a single molecule or set of interacting molecules, and can be represented as a list of bases which are paired in a nucleic acid molecule.Liquid nitrogen vehicle: A liquid nitrogen vehicle is powered by liquid nitrogen, which is stored in a tank. Traditional nitrogen engine designs work by heating the liquid nitrogen in a heat exchanger, extracting heat from the ambient air and using the resulting pressurized gas to operate a piston or rotary motor.CinnamaldehydeDiethyl ether peroxideIntestinal parasite