| Chloroplasts at the proximal end of the cell also have grana, but with up to nine thylakoids per stack. |
| Thylakoids of grana stacks are mostly abundant in PSII complexes, while PSI complexes are predominant in stroma lamellae. |
| The relative amount of stroma thylakoids is also increased, while the portion of grana thylakoids is lowered. |
| Sometimes grana lost their stacked organization and appeared to slide partially apart at the partitions. |
| Chloroplast envelopes, stacked grana and unstacked stroma thylakoids were well-defined. |
| The thylakoid system was normally developed with grana composed of, on average, three to four stacked thylakoids. |
