2. (Zo["o]l.) The ectoderm of a sponge. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
HIV — Classification and external resources Diagram of HIV … Wikipedia
HIV tropism — refers to the cell type that the human immunodeficiency virus (HIV) infects and replicates in. HIV tropism of a patient s virus is measured by the Trofile assay.HIV can infect a variety of cells such as CD4+ helper T cells and macrophages that… … Wikipedia
Syncytium — Syn*cy ti*um, n.; pl. {Syncitia}. [NL., from Gr. ? together + ? a hollow vessel.] 1. (Biol.) Tissue in which the cell or partition walls are wholly wanting and the cell bodies fused together, so that the tissue consists of a continuous mass of… … The Collaborative International Dictionary of English
Hexactinellid — taxobox image caption = Hexactinellae from Ernst Haeckel s Kunstformen der Natur , 1904 name = Hexactinellid sponges regnum = Animalia phylum = Porifera classis = Hexactinellida classis authority = Schmidt, 1870 subdivision ranks = Subclasses… … Wikipedia
Multicellular organism — In this image, a wild type Caenorhabditis elegans is stained to highlight the nuclei of its cells. Multicellular organisms are organisms that consist of more than one cell, in contrast to single celled organisms. Most life that can be seen with… … Wikipedia
Evolution of multicellularity — The first organisms that existed are believed to have been unicellular. How organisms then became multicellular is a huge evolutionary step and is consequently under much debate. However, unlike some other huge steps in evolution,… … Wikipedia
Virus de la rougeole — Measles virus … Wikipédia en Français
