( Admittedly ( , ( ( ( ( ( a ( single ( human gene ) ) ) or ) ( a ( cell line ) ) ) ( ( is not ) ( a ( human being ) ) ) ) ; ) ) )
(ROOT (FRAG (ADVP (RB Admittedly)) (, ,) (S (NP (NP (DT a) (JJ single) (JJ human) (NN gene)) (CC or) (NP (DT a) (NN cell) (NN line))) (VP (VBZ is) (RB not) (NP (DT a) (JJ human) (NN being)))) (: ;)))
Admittedly, a single human gene or a cell line is not a human being;
(ROOT (S (NP (DT A) (JJ single) (JJ human) (NN body) (NN cell)) (ADVP (RB typically)) (VP (VBZ contains) (NP (NP (NNS thousands)) (PP (IN of) (NP (NNS genes))))) (. .)))
A single human body cell typically contains thousands of genes.