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
Definition / General. 1  Composed of mucosa, submucosa, muscularis propria (externa) and serosa (perimuscular tissue in rectum) 2  Mucosa: epithelium, lamina propria and muscularis mucosa. 3  Epithelium: Low columnar to cuboidal cells.  Positive stains: CDX2 (sensitive and specific for colon), CK8, CK18, CK19.