Non-cancerous cysts include true cysts, follicular cysts, dermoid cysts and false cysts. True cysts have a secretory lining.. True cysts have a secretory lining (a membrane that lines its inner surface and produces secretions). Often, true cysts form in glands as a result of blocked ducts.
EXPLICIT / IMPLICIT RELATIONSHIPS. WITHIN and BETWEEN SENTENCES.  Sentence comprehension may involve recognizing the relationship between parts of a sentence.  If the relationship within the sentence is explicit (stated), transition words and phrases will be used. If the. relationship within the sentence in implicit (unstated), the reader must infer the relationship.
An open sentence is a statement which contains a variable and becomes either true or false depending on the value that replaces the variable. The negation of statement p is  not p, symbolized by ~p. A statement and its negation have opposite truth values.