Figure 7:Photographs of gel strength measurement by inverting tube: a) IMN-liposome gel composed of Dox-PPC+hmC+ IMN; b) the mixture of Dox+IMN+hmC; and c) the mixture of Dox + hmC. The samples were kept in the cell culture media for 3days and the tubes were inverted each day. The IMN-Dox liposome gel demonstrated that it can remain gel state in the culture media.