A method of caching data is disclosed. Said thiazolhydrazide compounds can be used for prophylaxis andor treatment of neurodegenerative diseases and conditions. A plurality of the display apparatus may be combined to allow an associate movement thereof so as to constitute a composite display apparatus, such as a head-mount display. The elongated element is releasably coupled to an interior wall of the retractor and has an extension extending distal of the distal end of the retractor into the surgical target site. Reagent kits that facilitate the subject methods are also provided.