<?xml version="1.0" encoding="US-ASCII"?>
<xs:schema
targetNamespace="http://xbrl.sec.gov/rxd-all/2013-01-31"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:rxd-doc="http://xbrl.sec.gov/rxd-doc/2013-01-31"
xmlns:rxd-ref="http://xbrl.sec.gov/rxd-ref/2013-01-31"
xmlns:rxd-std="http://xbrl.sec.gov/rxd-std/2013-01-31"
xmlns:xbrli="http://www.xbrl.org/2003/instance"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
elementFormDefault="qualified">
<xs:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
<xs:import schemaLocation="rxd-std-2013-01-31.xsd" namespace="http://xbrl.sec.gov/rxd-std/2013-01-31" />
<xs:import schemaLocation="rxd-doc-2013-01-31.xsd" namespace="http://xbrl.sec.gov/rxd-doc/2013-01-31" />
<xs:import schemaLocation="rxd-ref-2013-01-31.xsd" namespace="http://xbrl.sec.gov/rxd-ref/2013-01-31" />
</xs:schema>