Entirely human.  His divinity was not biological.  He was wholly human and wholly divine, not a hybrid like Hercules, et al.  Indeed, there was likely a great deal of discussion in the early Church to not have him appear as a poor man's demigod.  Romany legend is that when Mary, Martha and Lazarus landed in France, Mary and Jesus child miraculously brought them to shore - of course, this legend is probably untrue because of the name given to her in the legend - Sara Cali.  Sara Cali is actually the Hindu goddess of death, so this is an appropriation of myth rather than any kind of factual account.  The interesting point, however, is that she was known to remain a virgin and was their only child.  No descendants here.