28 across: Anucleated, biconvex structures that help form a…
28 across: Anucleated, biconvex structures that help form a plug wherever blood vessels have been damaged. They are not cells and are derived from cytoplasmic fragmentation of megakaryocytes in the bone marrow. *If the answer includes two or more words, combine them into one. *Do not add any spaces or punctuation before or after your answer. *Use all lowercase letters.