Portland, Maine â For the first time, scientists have figured out how to determine the age of a lobster â by counting its rings, like a tree. Nobody knows how old lobsters can live to be; some people estimate they live to more than 100.
The lamina propria (more correctly lamina propria mucosae) mucosÃ¦ is a thin layer of loose connective, tissue or dense irregular connective, tissue which lies beneath the epithelium and together with the epithelium constitutes the. mucosa
Flagella are long and thread like, whereas fimbriae are short and thin.  Flagella are composed of flagellin whereas fimbriae are made up of pilin.  Unlike flagella fimbri â¦ ae produce surface pellicles in liquid media.  Flagella can be visualized in electron microscope and dark ground microscope, whereas fimbriae can be seen under electron microscopy only.