Innate immune stimulation by Morpholinos in Xenopus?

The discussion of innate immune stimulation by Morpholinos in Xenopus continues.

Paraiso KD, Blitz IL, Zhou JJ, Cho KWY. Morpholinos Do Not Elicit an Innate Immune Response during Early Xenopus Embryogenesis. Dev Cell. 2019;49(4):643-50. doi:10.1016/j.devcel.2019.04.019
https://www.cell.com/developmental-cell/fulltext/S1534-5807(19)30316-8

Gentsch GE, Spruce T, Owens NDL, Monteiro RS, Smith JC. The Innate Immune Response of Frog Embryos to Antisense Morpholino Oligomers Depends on Developmental Stage, GC Content and Dose. Dev Cell. 2019;49(4):506-7. doi:10.1016/j.devcel.2019.05.004
https://www.cell.com/developmental-cell/fulltext/S1534-5807(19)30375-2

These new papers extend the work presented in:
Gentsch GE, Spruce T, Monteiro RS, Owens NDL, Martin SR, Smith JC. Innate Immune Response and Off-Target Mis-splicing Are Common Morpholino-Induced Side Effects in Xenopus. Dev Cell. 2018;[Epub ahead of print] doi:10.1016/j.devcel.2018.01.022.
http://www.cell.com/developmental-cell/fulltext/S1534-5807(18)30057-1