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You're all going to die' - Parkland shooter's phone videos released

Nikolas Cruz recorded several videos announcing his plans to kill up to 20 people at his high school in Parkland, FL. He doesn't want the shooter to get more publicity, but he believes the recordings are very important evidence.
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Histology

Tissue sections were fixed in 10% buffered formalin, dehydrated in absolute ethanol, cleared in xylene, and embedded in paraffin. Five-micron tissue sections were subjected to Masson’s Trichrome staining at the Research Histopathology Core at the UTMB, and fibrosis was assessed by measuring the collagen area as a percentage of the total myocardial area (n = 4 mice /group, 2–3 slides per mouse, 10 microscopic fields per slide) using Simple PCI software (v.6.0; Compix, Sewickley PA). Sections were scored based on percent of fibrotic area: (0) <1%, (1) 1–5%, (2) 5–10%, (3) 10–15%, and (4) >15% [24].

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