The tracks indicated by the logo  or
		    or  have been lifted from hg18 or hg17, respectively, with a minimum of quality-control
		    scrutiny.  They are provided to our users with the intent that
		    they assist in interpretation of other data, but must be used
		    with caution. Not all annotations remain intact
		    when lifted in this manner and in any case, cannot by definition
		    contain any sequence that is new to hg19.
                    have been lifted from hg18 or hg17, respectively, with a minimum of quality-control
		    scrutiny.  They are provided to our users with the intent that
		    they assist in interpretation of other data, but must be used
		    with caution. Not all annotations remain intact
		    when lifted in this manner and in any case, cannot by definition
		    contain any sequence that is new to hg19.
		    
		    
                    It should also be noted that tracks containing large regions will 
                    lift less well because of the increased chance of spanning a region
                    that changed between the two assemblies.