I looks like the lysosomal enzymes at the end of the IPFD crystal inclusion-structures might be tubular. But then as the enzymes pass away from the IPFD itself, there can be a coiling up of the protein with less rigidity.  Measurements at ends of IPFD look smaller than those in the lysosom proper… may be error of just having only measured a single crystal. Same negative and block as previous post, and the ends of the IPFD crystal are colored bluish, and the area measure for ribosome size is in red. Enlargements below, with areas specific measured highlighted. The dense part of the period and the lucent areas beside it.