Fig. 3From: Cryopreservation of Abies alba × A. numidica and Pinus nigra embryogenic tissues by stepwise dehydration methodRegrowth of thawed ET clumps of A. alba x A. numidica and P. nigra in 12 and 28 days of in vitro culture, respectively. C—Control = fresh, non-cryopreserved ET (a and c); LN—ET after storage in LN (b and d). Bar = 10 mmBack to article page