Fixation agents, fixation time and type of tissue are important factors to consider for transmission electron microscopy (TEM), and not every protocol is suitable for all cell types.
We evaluated a range of fixation agents, post-fixation time and dehydration solutions to determine a TEM protocol for seaweeds in the Family Ulvaceae.
Herein, MCs formed with pyrazinehydroxamic acid (Ln3+[Zn(ii MCpyzHA], Ln3+ = Yb, Nd) were used, combined with near-infrared (NIR) counter staining and fixation agents for HeLa cells upon an initial five minute exposure to UV-A light.
Among various fixation agents for cross-linking cell membrane and cytoplasmic protein, paraformaldehyde (PFA) is one of the most widely used chemical agents for cell and tissue samples [4 6].
Similar to Hudson, Weber (2005, Ch. 9) argues that the demonstration that mesosomes were experimental artifacts was nothing but an ordinary experimental demonstration of the existence of a causal relationship, namely between mesosome appearances and the fixation agents.
Biobriquette technology, in which biobriquettes are made of biomass, coal, and sulfur fixation agents through high-pressure manufacturing processes (Lu et al. 2000), is being investigated.
An explanation for that could be an enlargement of the vasculature by increased pressure that was discussed to occur during perfusion with fixation agents [ 12].
Where treated with inhibitors prior to fixation, the indicated agents were applied in DMEM (without Phenol Red or sodium pyruvate) supplemented with 25 mM Hepes, pH 7.4 (Invitrogen) and 10% (v/v) FBS.
Therefore, equivalent protocols differing only in the inclusion of a permeabilization agent during fixation can be used to quantify the total ER (tER) versus the mER.
Importantly, the fluxes of different ions had very distinctive time courses, and were abolished or significantly affected by chemical fixation or by pharmacological agents that modulate ion transport.
