Thus newspaper publication features leader in the flesh? (4,6)
I believe the answer is:
soft tissue
'flesh?' is the definition.
(type of flesh)
'thus newspaper publication features leader in the' is the wordplay.
'thus' becomes 'so' (synonyms).
'newspaper' becomes 'FT' (Financial Times newspaper).
'publication' becomes 'issue' (issue is a kind of publication).
'features' indicates putting letters inside.
'leader in' says to take the initial letters.
The initial letter of 'the' is 't'.
'ft'+'issue'='ftissue'
'ftissue' enclosing 't' is 'fttissue'.
'so'+'fttissue'='SOFT TISSUE'
(Another definition for soft tissue that I've seen is " Parts of the body".)