Fig. 2From: Hydroxyapatite nanoparticles: an alternative to conventional phosphorus fertilizers in acidic culture mediaTEM images of HAP(s) nanoparticles (a, b). SEM images of HAP(p) nanoparticles (c, d). Abbreviations: HAP(p), hydroxyapatite nanoparticles in powder form. HAP(s), hydroxyapatite nanoparticles in suspension formBack to article page