Besides Ewing's sarcoma, this tissue is usually destroyed
 heavily in multiple myeloma, creating "punch-out" lesions.
One tumor of this tissue is caused by an EWS to FLI1 translocation and presents with an onion skin
 appearance, and tumors of this tissue often create Codman triangles. Mutations in the src kinase in mice
 results in abnormally high density of this tissue. Besides Ewing's sarcoma, this tissue is usually destroyed
 heavily in multiple myeloma, creating "punch-out" lesions. The cells that break down this tissue rest in
 Howship's Lacunae, and Volkmann's canals run transversely through this tissue, perpendicularly to
 Haversian canals. This tissue contains large amounts of hydroxyapatite, and parathyroid hormone causes its
 resorption. It comes in cortical or compact and cancellous or spongy varieties, and its cells are known as
 osteocytes. This tissue becomes porous in osteoporosis. For 10 points, name this white, hard,
 calcium-containing tissue that composes the skeletal system.
One tumor of this tissue is caused by an EWS to FLI1 translocation and presents with an onion skin
 appearance, and tumors of this tissue often create Codman triangles.
{Bone}