XSLT empty tags are not included in output

I am transforming an XML to another format. Input XML include table which have empty cells. Input is:

<cals:tbody>
                        <cals:row>
                            <ce:entry>
                                <ce:italic>P. andensis</ce:italic> Vitik.
                            </ce:entry>
                            <ce:entry/>
                            <ce:entry>+</ce:entry>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry>+</ce:entry>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry align="char" char=".">2</ce:entry>
                            <ce:entry align="char" char=".">1</ce:entry>
                            <ce:entry align="char" char=".">1</ce:entry>
                        </cals:row>
                        <cals:row>
                            <ce:entry>
                                <ce:italic>P. aphthosa</ce:italic> (L.) Willd.
                            </ce:entry>
                            <ce:entry>+</ce:entry>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry>+</ce:entry>
                            <ce:entry/>
                            <ce:entry>+</ce:entry>
                            <ce:entry>+</ce:entry>
                            <ce:entry/>
                            <ce:entry/>
                            <ce:entry align="char" char=".">41</ce:entry>
                            <ce:entry align="char" char=".">8</ce:entry>
                            <ce:entry align="char" char=".">3</ce:entry>
                        </cals:row>
                        </cals:tbody>

my xslt code is :

<xsl:for-each select="/TBODY/ROW">

                                            <tr>
                                            <xsl:for-each select="./ENTRY">

                                                <xsl:element name="td">
                                                    <xsl:value-of select="."></xsl:value-of>
                                                </xsl:element>

                                            </xsl:for-each>
                                           </tr>
                                        </xsl:when>
                                    </xsl:choose>

                                </xsl:for-each>

Output do not have td tags for corresponding empty entry tag. Is there any solution for this problem?